111 Highlights 68 Differences 7 Reactions 0 Likes

Uppababy Knox vs Nuna PIPA RX: 111 Highlights & 68 Differences — So, Which Car Seat Actually Works Better

Choosing between convenience and extended use made easy with this simple guide. Still unsure between Uppababy Knox and Nuna PIPA RX? Our side-by-side car seats guide helps you pick what suits your parenting style.

64 Points
Uppababy
Uppababy
Uppababy Knox Convertible Car Seat
Uppababy Knox
61 Points
Nuna PIPA RX
vs

Highlights 156

No extras. Just what matters.
64 Points
vs
61 Points

Why is Uppababy Knox better than Nuna PIPA RX ?

Scroll down for more facts

Uppababy Knox vs Nuna PIPA RX: A Detailed Car Seat Comparison for Growing Families

Choosing the right car seat is a crucial step for parents aiming to blend safety, comfort, and longevity. Both the Uppababy Knox and the Nuna PIPA RX focus on ensuring child safety with anti-rebound protection and extended rear-facing capabilities. The major difference lies in their usage span and design intent: the Knox serves as a convertible car seat ideal for children from ages 1 to 6, accommodating up to 65 lbs and 49 inches tall, while the PIPA RX is a premium infant-only seat designed for newborns up to 30 lbs and 30 inches tall. Each model packs a unique blend of features tailored for distinct parenting needs, be it long-term adaptability or specialized newborn comfort and convenience.

The Uppababy Knox: Long-Lasting Versatility for Growing Kids

The Uppababy Knox stands out in the realm of convertible car seats, designed to evolve alongside your child from toddler years well into early school age. Supporting a wide height limit of 49 inches and a weight range between 14 and 65 lbs, this seat offers significant longevity, eliminating the need for multiple transitions. Its dual rear and forward-facing installation options make it flexible, accommodating changes in safety recommendations as children grow.

Installation complexity is rated as medium, lacking quick-install features but providing a sturdy fit via seat belt or LATCH systems, and it proudly carries FAA aircraft approval for families on the move. Its practical design includes 8 harness height adjustment levels, ensuring an individualized and secure fit over multiple years. 

Comfort-wise, the Knox offers a bucket-style seat with adjustable depth and four recline positions, though it does not support specialized sleeping postures or ergonomic contours. While the fabrics are standard polyester without stain- or hypoallergenic treatment, the removable cover is machine washable at up to 86°F and easy to maintain.

Nuna PIPA RX: Premium Infant Protection and Convenience

In contrast, the Nuna PIPA RX is explicitly crafted for newborns through infancy, supporting children from 4 to 30 lbs and heights up to 30 inches. This seat boasts a user-friendly installation rated easy, featuring quick-installation capabilities and an installation time of about one minute, a feature particularly appreciated by busy parents. Like its counterpart, it is FAA approved for air travel, making it a versatile choice for families who travel frequently.

The PIPA RX offers a range of comfort-enhancing features that elevate the infant travel experience, such as sleeping position support, an ergonomic seat contour designed to cradle newborns, and fabrics that are both hypoallergenic and stain-resistant. It also includes a one-hand adjustable harness and leatherette trim accents, which lend a premium aesthetic and tactile experience. 

Additional convenience comes from a suite of accessories including a sunshade, organizer pocket, mosquito net compatibility, and toy attachment options. Its crash safety ratings extend beyond the basic FMVSS213 certification, including rigorous NHTSA and ADAC endorsements, amplifying confidence in its protective qualities.

Quick Take

The Uppababy Knox delivers extended usability with robust safety features and adaptable seating positions that grow with your child, all at a practical price point. Meanwhile, the Nuna PIPA RX offers outstanding installation ease paired with top-tier comfort and premium materials aimed at safeguarding and soothing newborns, albeit with a shorter usability span.

Bottom Line

For families looking for longevity and adaptability, the Uppababy Knox is the superior investment, supporting children well beyond infancy with versatile installation modes and adjustable harness levels. On the other hand, the Nuna PIPA RX shines as a specialized, premium infant car seat that brings exceptional ease of use and comfort but requires eventually upgrading as your child grows. In summary, pick the Knox for enduring value or the PIPA RX for a luxe newborn-focused solution.

Verdict

  • Winner: Uppababy Knox - Offers wider age and size range with convertible flexibility and great safety features, making it a smart long-term choice.
  • Runner-up: Nuna PIPA RX - Excels in premium materials, infant-specific ergonomics, and ease of installation but limited to infant use only.

Comparisons 27

Two enter. One leaves your cart.

Price comparisons

(✱) Prices may be changed at any time without further notice.

Related comparisons 27

Because one duel is never enough.

Comparisons & Facts 156

Side by side. The numbers. The features. No drama.

Trying to pick the smarter parenting tool? This comparison of Uppababy Knox vs Nuna PIPA RX covers comfort, price, pros, and hidden quirks.

General Information 15

Age Range Suitability

What is the age range suitability?

20 Uppababy Knox 0 Votes 1 – 6 Years

13 Nuna PIPA RX 0 Votes Birth – 1 Year

Uppababy Knox
vs
Nuna PIPA RX
Age Range Suitability

The Age Range Suitability for Uppababy Knox is 1 – 6 Years while Nuna PIPA RX is suitable from Birth – 1 Year, making Nuna PIPA RX more suitable for newborns.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 46 Updated at 2026-04-14 08:41:43: 50
Score info for Uppababy Knox:
We base our scoring on 'Age Range Suitability' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Age Range Suitability' on the following:

Indicates the recommended age suitability of the child.

Facing Direction

What is the orientation?

100 Uppababy Knox 0 Votes Rear and Forward-Facing

23 Nuna PIPA RX 0 Votes Rear-Facing

Uppababy Knox
vs
Nuna PIPA RX
Facing Direction

Uppababy Knox offers both Rear and Forward-Facing options whereas Nuna PIPA RX is limited to Rear-Facing, giving Uppababy Knox more flexibility in seating orientation.

States whether seat is rear-facing, forward-facing, or convertible.

Weight Range Suitability

What weight range does it support?

66 Uppababy Knox 0 Votes 14–65 lbs

23 Nuna PIPA RX 0 Votes 4–30 lbs

Uppababy Knox
vs
Nuna PIPA RX
Weight Range Suitability

The Weight Range Suitability for Uppababy Knox is 14–65 lbs while Nuna PIPA RX supports 4–30 lbs, so Uppababy Knox can accommodate heavier children.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 21 Updated at 2026-04-14 08:41:43: 74
Score info for Uppababy Knox:
We base our scoring on 'Weight Range Suitability' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Weight Range Suitability' on the following:

Shows the safe weight range supported by the seat.

Product Type

What type of car seat is it?

75 Uppababy Knox 0 Votes Convertible Car Seat

23 Nuna PIPA RX 0 Votes Infant Car Seat

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 66 Updated at 2026-04-14 08:41:43: 70
Score info for Uppababy Knox:
We base our scoring on 'Product Type' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Product Type' on the following:

Defines the main classification of the car seat.

Model Name

What is the model name?

66 Uppababy Knox 0 Votes Knox

63 Nuna PIPA RX 0 Votes PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 76 Updated at 2026-04-14 08:41:43: 64
Score info for Uppababy Knox:
We base our scoring on 'Model Name' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Model Name' on the following:

Identifies the specific model or version of the car seat.

Model Number

What is the model number?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Identifies the specific model or version of the car seat.

Release Year

What is the release year?

85 Uppababy Knox 0 Votes 2021

53 Nuna PIPA RX 0 Votes 2021

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 56 Updated at 2026-04-14 08:41:43: 67
Score info for Uppababy Knox:
We base our scoring on 'Release Year' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Release Year' on the following:

States the year of product launch or update.

Country of Manufacture

Where is it manufactured?

50 Uppababy Knox 0 Votes China

23 Nuna PIPA RX 0 Votes China

Identifies the country where the seat is produced.

Car Seat Type

What car seat type is it?

20 Uppababy Knox 0 Votes Rear-Facing, Forward-Facing

18 Nuna PIPA RX 0 Votes Rear-Facing

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 11 Updated at 2026-04-14 08:41:43: 23
Score info for Uppababy Knox:
We base our scoring on 'Car Seat Type' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Car Seat Type' on the following:

Specifies the seating style and intended configuration.

Height Range Suitability

What height range does it support?

74 Uppababy Knox 0 Votes Up To 49 inch

23 Nuna PIPA RX 0 Votes 16–30 inch

Uppababy Knox
vs
Nuna PIPA RX
Height Range Suitability

The Height Range Suitability for Uppababy Knox is Up To 49 inch while Nuna PIPA RX is suitable for 16–30 inch, supporting taller children for Uppababy Knox.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 62 Updated at 2026-04-14 08:41:43: 61
Score info for Uppababy Knox:
We base our scoring on 'Height Range Suitability' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Height Range Suitability' on the following:

Defines child height range that fits safely in the seat.

Seating Capacity

How many children can it seat?

80 Uppababy Knox 0 Votes 1

0 Nuna PIPA RX 0 Votes 1 Child

Uppababy Knox
vs
Nuna PIPA RX
Seating Capacity

Both Uppababy Knox and Nuna PIPA RX seat 1 child, so seating capacity is equivalent.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 46 Updated at 2026-04-14 08:41:43: 40
Score info for Uppababy Knox:
We base our scoring on 'Seating Capacity' on the following:

Shows how many children the seat can accommodate.

Certification Approval Standard

Which certification does it meet?

40 Uppababy Knox 0 Votes FMVSS 213

48 Nuna PIPA RX 0 Votes FMVSS 213, JPMA

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 66 Updated at 2026-04-14 08:41:43: 60
Score info for Uppababy Knox:
We base our scoring on 'Certification Approval Standard' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Certification Approval Standard' on the following:

Shows compliance with child safety standards.

Dimensions & Weight 14

Folded Height

What is the folded height?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Height of the car seat when folded.

Product Length

What is the product length?

23.75 inch 0 Votes
Uppababy Knox
25.2 inch 0 Votes
Nuna PIPA RX

Uppababy Knox
Uppababy Knox

The product measures 23.75 inches (60.33 cm) in length, which is roughly the size of a medium-sized backpack. This makes the car seat compact enough to fit well in most vehicles without taking up excessive space while providing ample comfort for the child.

Nuna PIPA RX
Nuna PIPA RX

At 25.2 inches (or 64.01 cm), the PIPA RX provides a balanced size that offers both a secure fit and easy portability, fitting well in a wide range of vehicle sizes without feeling bulky.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 57 Updated at 2026-04-14 08:41:43: 53
Score info for Uppababy Knox:
We base our scoring on 'Product Length' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Product Length' on the following:

Total length of the seat when fully assembled.

Product Width

What is the product width?

18.75 inch 0 Votes
Uppababy Knox
17.5 inch 0 Votes
Nuna PIPA RX

Uppababy Knox
Uppababy Knox

With a width of 18.75 inches (47.63 cm), the Uppababy Knox is designed to fit comfortably in most vehicles, including cars, SUVs, and trucks. This width is standard for convertible car seats, providing a good balance between comfort and space efficiency in the vehicle.

Nuna PIPA RX
Nuna PIPA RX

With a width of 17.5 inches (or 44.45 cm), the Nuna PIPA RX is narrow enough to fit in smaller cars but spacious enough to ensure a comfortable, secure fit for your baby.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 38 Updated at 2026-04-14 08:41:43: 47
Score info for Uppababy Knox:
We base our scoring on 'Product Width' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Product Width' on the following:

Total width across the car seat.

Product Height

What is the product height?

32.5 inch 0 Votes
Uppababy Knox
23 inch 0 Votes
Nuna PIPA RX

Uppababy Knox
Uppababy Knox

Standing 32.5 inches (82.55 cm) tall, the car seat offers ample head support for taller children. The height is typical for a convertible seat, ensuring it can provide secure support for a growing child while still fitting within most car interiors.

Nuna PIPA RX
Nuna PIPA RX

The 23-inch height of the Nuna PIPA RX, which is 58.42 cm, offers a compact yet protective structure, perfect for parents looking for a smaller, more versatile car seat that doesn't compromise on safety.

Overall height of the car seat.

Product Weight

What is the product weight?

31.4 lbs 0 Votes
Uppababy Knox
7.6 lbs 0 Votes
Nuna PIPA RX

Uppababy Knox
Uppababy Knox

The Uppababy Knox weighs 31.4 lbs (14.25 kg), which is on the heavier side for convertible car seats. This weight contributes to the seat's stability, making it more secure during use. However, it also means the seat is less portable, making it harder to move between vehicles.

Nuna PIPA RX
Nuna PIPA RX

7.6 lbs without canopy and inserts, while the canopy+insert adds approximately 1 lb, so with canopy/inserts is 8.6 lbs.

The weight of the car seat itself.

Seat Base Width

What is the base width?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

12 inch 0 Votes
Nuna PIPA RX

Nuna PIPA RX
Nuna PIPA RX

The seat base measures 12 inches (or 30.48 cm) in width, offering a secure fit within a wide variety of car seats while optimizing space for passengers.

Width of the seat base that rests on vehicle seat.

Child Height Limit

What is the child height limit?

49 inch 0 Votes
Uppababy Knox
32 inch 0 Votes
Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Child Height Limit

The Child Height Limit for Uppababy Knox is 49 inches while Nuna PIPA RX supports up to 32 inches, indicating Uppababy Knox suits taller children better.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 59 Updated at 2026-04-14 08:41:43: 64
Score info for Uppababy Knox:
We base our scoring on 'Child Height Limit' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Child Height Limit' on the following:

Maximum child height the seat can support.

Armrest Width

What is the armrest width?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Width of armrests (if included).

Cushion Thickness

What is the cushion thickness?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Thickness of seat padding for comfort.

Seat Depth

What is the seat depth?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Depth of seating area for the child.

Seat Height without base

What is the seat height without base?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Height of seat component when detached from base.

Backrest Height

What is the backrest height?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Height of the child’s back support.

Design & Aesthetics 10

Color Options

What color options are available?

50 Uppababy Knox 0 Votes White, Gray

37 Nuna PIPA RX 0 Votes Black, Brown, Gray, Beige

Uppababy Knox
vs
Nuna PIPA RX
Color Options

Color Options for Uppababy Knox include White and Gray, while Nuna PIPA RX offers Black, Brown, Gray, and Beige, providing a wider variety in the Nuna PIPA RX.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 36 Updated at 2026-04-14 08:41:43: 30
Score info for Uppababy Knox:
We base our scoring on 'Color Options' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Color Options' on the following:

Available color variations.

Pattern/Print Options

What patternprint options are offered?

10 Uppababy Knox 0 Votes Solid

13 Nuna PIPA RX 1 Votes Solid

Uppababy Knox
vs
Nuna PIPA RX
Pattern/Print Options

Both Uppababy Knox and Nuna PIPA RX feature Solid Pattern/Print Options, making fabric design similar and understated.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 16 Updated at 2026-04-14 08:41:43: 20
Score info for Uppababy Knox:
We base our scoring on 'Pattern/Print Options' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Pattern/Print Options' on the following:

Available seat patterns or prints.

Both have solid patterns but Nuna PIPA RX adds a classy leatherette trim I really like.

See more

Handle Design

What is the handle design?

80 Uppababy Knox 0 Votes Integrated

69 Nuna PIPA RX 0 Votes Ergonomic

Uppababy Knox
vs
Nuna PIPA RX
Handle Design

Handle Design is Integrated on Uppababy Knox and Ergonomic on Nuna PIPA RX, with Nuna PIPA RX potentially providing more comfortable handling.

Design style of carrying handle.

Trim Accent Options

What trimaccent options are available?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

30 Nuna PIPA RX 0 Votes Leatherette

Uppababy Knox
vs
Nuna PIPA RX
Trim Accent Options

Trim Accent Options are unavailable for Uppababy Knox but feature Leatherette trim on Nuna PIPA RX, adding a premium aesthetic to Nuna PIPA RX.

Accent trims or finishes available.

Premium Edition Version

Is there a premium edition?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Premium Edition Version

Uppababy Knox does not have a Premium Edition Version whereas Nuna PIPA RX does, offering an upgraded variant for Nuna PIPA RX.

Indicates if a premium edition is available.

Design Theme

What is the design theme?

90 Uppababy Knox 0 Votes Modern

83 Nuna PIPA RX 0 Votes Modern

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 96 Updated at 2026-04-14 08:41:43: 100
Score info for Uppababy Knox:
We base our scoring on 'Design Theme' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Design Theme' on the following:

General design aesthetic of the seat.

Texture Finish

What is the texture finish?

50 Uppababy Knox 0 Votes Matte

23 Nuna PIPA RX 0 Votes Smooth

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 66 Updated at 2026-04-14 08:41:43: 70
Score info for Uppababy Knox:
We base our scoring on 'Texture Finish' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Texture Finish' on the following:

Type of surface texture finish.

Stitching Style

What stitching style is used?

40 Uppababy Knox 0 Votes Standard

23 Nuna PIPA RX 0 Votes Standard

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 56 Updated at 2026-04-14 08:41:43: 30
Score info for Uppababy Knox:
We base our scoring on 'Stitching Style' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Stitching Style' on the following:

The visible stitching style used.

Logo Brand Placement

Where is the logo placed?

90 Uppababy Knox 0 Votes Headrest

53 Nuna PIPA RX 0 Votes Headrest

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 96 Updated at 2026-04-14 08:41:43: 100
Score info for Uppababy Knox:
We base our scoring on 'Logo Brand Placement' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Logo Brand Placement' on the following:

Where the brand logo is placed.

Seasonal Style Variants

Are seasonal style variants offered?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Special edition variants released seasonally.

Fabric & Materials 11

Removable Cover

Is the cover removable?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Removable Cover

Both Uppababy Knox and Nuna PIPA RX have Removable Covers, facilitating cleaning and maintenance equally.

Indicates whether the seat cover can be removed.

Flame Retardant Fabric

Does it have flame retardant fabric?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Flame Retardant Fabric

Neither Uppababy Knox nor Nuna PIPA RX have Flame Retardant Fabric, so fire safety in material is equal for both.

Shows if flame retardant fabric is used.

Hypoallergenic Properties

Is the fabric hypoallergenic?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Hypoallergenic Properties

Hypoallergenic Properties are absent in Uppababy Knox but present in Nuna PIPA RX, indicating Nuna PIPA RX may be better for sensitive children.

Indicates whether the fabric is hypoallergenic.

Cover Material

What is the cover material?

60 Uppababy Knox 0 Votes Polyester

48 Nuna PIPA RX 0 Votes Polyester

Uppababy Knox
vs
Nuna PIPA RX
Cover Material

Both Uppababy Knox and Nuna PIPA RX use Polyester as their Cover Material, making them similar in fabric type.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 46 Updated at 2026-04-14 08:41:43: 70
Score info for Uppababy Knox:
We base our scoring on 'Cover Material' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Cover Material' on the following:

Type of material used for the seat cover.

Machine Wash Safe

Is the cover machine-wash safe?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Nuna PIPA RX
Nuna PIPA RX

The fabric of the Nuna PIPA RX is machine washable at 30°C (86°F), providing a hassle-free cleaning process that fits the busy lifestyle of parents.

Indicates if cover is safe for machine washing.

Washable Cover

Is the cover washable?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Specifies if the cover is washable.

Water-Resistant Fabric

Is the fabric water-resistant?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Fabric resists liquid absorption.

Stain-Resistant Fabric

Is the fabric stain-resistant?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Stain-Resistant Fabric

Uppababy Knox does not feature Stain-Resistant Fabric while Nuna PIPA RX offers it, making Nuna PIPA RX potentially easier to keep clean.

Resists staining from food or spills.

Eco-Friendly Materials

Does it use eco-friendly materials?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Confirms if materials are sustainable or recycled.

Padding Material Type

What type of padding material is used?

75 Uppababy Knox 0 Votes EPS Foam

73 Nuna PIPA RX 0 Votes Memory Foam

Type of padding inside the car seat.

Comfort & Convenience 18

Sleeping Position Support

Does it support sleeping position?

No 0 Votes Uppababy Knox

Yes 1 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Sleeping Position Support

Sleeping Position Support is not available in Uppababy Knox but is supported by Nuna PIPA RX, making Nuna PIPA RX better for naps during travel.

Designed for safe, comfortable sleeping.

I kinda appreciate that Nuna PIPA RX supports sleeping position, feels more comfortable for naps.

See more

Toddler Insert Included

Is a toddler insert included?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Toddler Insert Included

Neither Uppababy Knox nor Nuna PIPA RX include a Toddler Insert, so neither has added infant cushioning.

Extra insert for toddlers transitioning from infant stage.

Ergonomic Design Features

Does it have ergonomic features?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Ergonomic Design Features

Uppababy Knox lacks Ergonomic Design Features while Nuna PIPA RX includes them, possibly offering more comfort in Nuna PIPA RX.

Special ergonomic shaping for posture and comfort.

Seat Contour Type

What seat contour type is it?

80 Uppababy Knox 0 Votes Bucket

63 Nuna PIPA RX 0 Votes Curved

Uppababy Knox
vs
Nuna PIPA RX
Seat Contour Type

Uppababy Knox has a Bucket Seat Contour Type, whereas Nuna PIPA RX uses a Curved seat contour, which may affect child positioning comfort differently.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 86 Updated at 2026-04-14 08:41:43: 90
Score info for Uppababy Knox:
We base our scoring on 'Seat Contour Type' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Seat Contour Type' on the following:

Shape of the seat design for child positioning.

Reclining Function Range

What is the reclining function range?

56 Uppababy Knox 0 Votes 30–45°

35 Nuna PIPA RX 0 Votes 30–45°

Uppababy Knox
Uppababy Knox

The Uppababy Knox features a reclining function with a range of 30 to 45 degrees. This provides a comfortable position for infants in rear-facing mode, while also offering an upright option for forward-facing toddlers. The recline range ensures that your child remains comfortable during long trips and naps.

Range of recline angles for comfort.

Seat Padding Thickness

What is the seat padding thickness?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Thickness of seat padding for comfort.

Fabric Material

What fabric type is used?

50 Uppababy Knox 0 Votes Polyester

33 Nuna PIPA RX 0 Votes Polyester

Type of fabric used in the seat covering.

Breathable Mesh Panels

Does it have breathable mesh panels?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Presence of mesh areas for airflow.

Ventilation System

Does it have a ventilation system?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Integrated ventilation to regulate temperature.

Headrest Cushion

Does it have a headrest cushion?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Extra cushioning in headrest area for comfort.

Lumbar Support

Does it have lumbar support?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Padding or structure to support child’s lower back.

Armrest Presence

Does it have armrests?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Indicates if the seat has built-in armrests.

Adjustability & Features 15

Harness Height Adjustment Levels

How many harness height adjustments are available?

46 Uppababy Knox 1 Votes 8

3 Nuna PIPA RX 0 Votes 3

Uppababy Knox
vs
Nuna PIPA RX
Harness Height Adjustment Levels

Uppababy Knox provides 8 Harness Height Adjustment Levels compared to 3 levels in Nuna PIPA RX, offering more precise fit options in Uppababy Knox.

Number of vertical positions for harness straps.

Uppababy Knox offers more harness height levels, which gives better adjustability as my kid grows.

See more

Quick-Release Mechanism

Does it have a quick-release mechanism?

Yes 0 Votes Uppababy Knox

Yes 1 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Quick-Release Mechanism

Both Uppababy Knox and Nuna PIPA RX offer a Quick-Release Mechanism, facilitating easy removal equally.

Mechanism to quickly remove or detach the seat.

Quick-release mechanism is present in both but Nuna PIPA RX does it with an easy one-hand adjustment.

See more

Recline Positions Count

How many recline positions are there?

31 Uppababy Knox 0 Votes 4

33 Nuna PIPA RX 0 Votes 4

Uppababy Knox
vs
Nuna PIPA RX
Recline Positions Count

Both Uppababy Knox and Nuna PIPA RX offer 4 Recline Positions, giving similar adjustability for child comfort.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:26: 35 Updated at 2026-04-14 08:41:43: 32
Score info for Uppababy Knox:
We base our scoring on 'Recline Positions Count' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Recline Positions Count' on the following:

Number of recline positions offered.

Adjustable Headrest Positions

How many headrest positions does it have?

46 Uppababy Knox 0 Votes 8

0 Nuna PIPA RX 0 Votes 3

Uppababy Knox
Uppababy Knox

The headrest of the Uppababy Knox has eight adjustable positions, allowing you to customize the fit for your child as they grow. This ensures optimal head and neck support throughout their development.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:26: 61 Updated at 2026-04-14 08:41:43: 56
Score info for Uppababy Knox:
We base our scoring on 'Adjustable Headrest Positions' on the following:

Number of headrest positions available.

Rear-to-Forward Transition Feature

Does it support rear-to-forward transition?

Yes 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Nuna PIPA RX
Nuna PIPA RX

The Nuna PIPA RX is designed for rear-facing use only, providing optimal safety for infants by ensuring they are positioned in the safest orientation during travel.

Shows if the seat allows easy switch from rear to forward facing.

Swivel Range

What is the swivel range?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Degree range the seat can swivelrotate.

Adjustable Leg Support

Does it have adjustable leg support?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Indicates if leg support can be extended or repositioned.

Multi-Stage Use

Can it be used as a convertible seat?

Yes 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Whether the seat adapts across infant, toddler, and booster stages.

Booster Mode Support

Can it be used as a booster?

Yes 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Indicates if seat can convert into booster mode.

Seat Belt Guide

Does it include a seat belt guide?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Helps position seat belt properly in booster mode.

Storage Pocket

Does it have storage pockets?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Indicates presence of small storage compartments.

Integrated Sunshade Canopy

Does it have a sunshade or canopy?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Built-in sunshade for added protection.

Safety & Protection 16

Anti-Rebound Protection

Does it have anti-rebound protection?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Anti-Rebound Protection

Both Uppababy Knox and Nuna PIPA RX have Anti-Rebound Protection, ensuring similar safety against rebound impacts.

Feature that limits rebound motion in crash.

Crash Test Certification

What crash test certifications does it hold?

80 Uppababy Knox 0 Votes FMVSS213

53 Nuna PIPA RX 0 Votes NHTSA, ADAC, FMVSS213

Uppababy Knox
vs
Nuna PIPA RX
Crash Test Certification

Uppababy Knox is FMVSS213 certified while Nuna PIPA RX has certifications from NHTSA, ADAC, and FMVSS213, implying broader crash test verifications for Nuna PIPA RX.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 56 Updated at 2026-04-14 08:41:43: 70
Score info for Uppababy Knox:
We base our scoring on 'Crash Test Certification' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Crash Test Certification' on the following:

Indicates which crash test programs the seat passed.

Extended Rear-Facing Capability

Does it support extended rear-facing use?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Extended Rear-Facing Capability

Extended Rear-Facing Capability is supported by both Uppababy Knox and Nuna PIPA RX, providing enhanced safety during rear-facing use.

Allows children to remain rear-facing beyond standard limits.

Safety Indicators

Does it have safety indicators?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Safety Indicators

Safety Indicators are included in both Uppababy Knox and Nuna PIPA RX, contributing equally to user awareness of proper installation.

Shows if the seat includes built-in safety status indicators.

Emergency Release Mechanism

Does it have an emergency release?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Emergency Release Mechanism

Emergency Release Mechanism is available in both Uppababy Knox and Nuna PIPA RX, enhancing safety and emergency convenience.

Feature that allows quick release in emergencies.

Side Impact Protection

Does it have side impact protection?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
Uppababy Knox

The Uppababy Knox features side impact protection, a critical safety feature that helps shield your child from injury in the event of a side collision. The advanced protection includes EPS foam and a steel-reinforced frame to absorb and distribute impact forces.

Nuna PIPA RX
Nuna PIPA RX

This car seat is equipped with side-impact protection, designed to protect your baby from side collisions by absorbing and redistributing crash forces.

Indicates presence of padding or technology against side collisions.

Energy-Absorbing Foam

Does it use energy-absorbing foam?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
Uppababy Knox

The seat is equipped with energy-absorbing foam, which reduces the forces transferred to your child during a crash. This feature improves overall safety by minimizing injury in the event of an accident.

Nuna PIPA RX
Nuna PIPA RX

The PIPA RX uses energy-absorbing foam to reduce the impact of a crash, enhancing the safety of your child during an accident by absorbing shock energy.

Presence of EPS or EPP foam to absorb crash forces.

Steel Reinforced Frame

Does it have a steel reinforced frame?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
Uppababy Knox

The steel-reinforced frame offers enhanced durability and structural integrity, ensuring the car seat maintains its shape during a collision. This feature contributes to the seat's overall safety and stability.

Nuna PIPA RX
Nuna PIPA RX

The steel-reinforced frame adds extra strength and durability, ensuring that the car seat remains secure during travel and provides superior protection in the event of a collision.

Steel in the frame increases durability and crash safety.

Five-Point Harness

Does it use a five-point harness?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
Uppababy Knox

The five-point harness system is designed to securely hold your child in place. This harness system is widely regarded as one of the safest methods of securing a child in a car seat.

Nuna PIPA RX
Nuna PIPA RX

The five-point harness system ensures a secure fit for your baby, fastening at the shoulders, hips, and between the legs for maximum safety and stability.

Shows if the seat uses a five-point harness system.

Impact-absorbing Base

Does it have an impact-absorbing base?

Yes 0 Votes Uppababy Knox

Yes 1 Votes Nuna PIPA RX

Base designed to dissipate crash forces.

Even though both have safety indicators, Nuna PIPA RX has multiple crash test certifications which feels reassuring.

See more

Three-Point Harness

Does it use a three-point harness?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Indicates if a simpler three-point harness is used.

No-Rethread Harness

Does it have a no-rethread harness?

Yes 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Harness adjusts without rethreading straps manually.

Installation & Compatibility 16

Installation Method

What installation methods are supported?

35 Uppababy Knox 0 Votes Seat Belt, LATCH

48 Nuna PIPA RX 0 Votes Seat Belt, LATCH

Uppababy Knox
vs
Nuna PIPA RX
Installation Method

Both Uppababy Knox and Nuna PIPA RX support Installation via Seat Belt and LATCH, offering the same versatility in securing the seat.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:45: 0 Updated at 2026-03-02 04:01:26: 36 Updated at 2026-04-14 08:41:43: 45
Score info for Uppababy Knox:
We base our scoring on 'Installation Method' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Installation Method' on the following:

Indicates which systems can be used to secure the car seat.

Installation Difficulty Rating

What is the installation difficulty rating?

60 Uppababy Knox 0 Votes Medium

93 Nuna PIPA RX 1 Votes Easy

Uppababy Knox
vs
Nuna PIPA RX
Installation Difficulty Rating

Installation Difficulty Rating is Medium for Uppababy Knox but Easy for Nuna PIPA RX, indicating Nuna PIPA RX may be simpler to install.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 46 Updated at 2026-04-14 08:41:43: 50
Score info for Uppababy Knox:
We base our scoring on 'Installation Difficulty Rating' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Installation Difficulty Rating' on the following:

Relative ease of installation (e.g., 1–5 rating).

The Nuna PIPA RX has an easier installation rating which makes setup less stressful for me.

See more

Quick Installation Features

Does it have quick installation features?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Quick Installation Features

Quick Installation Features are absent in Uppababy Knox but present in Nuna PIPA RX, allowing faster installation for Nuna PIPA RX.

Indicates presence of fast-install mechanisms.

Installation Time Estimate

How long does installation take?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

1 minutes 0 Votes
Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Installation Time Estimate

Installation Time Estimate is unavailable for Uppababy Knox but is approximately 1 minute for Nuna PIPA RX, suggesting quicker setup for Nuna PIPA RX.

Approximate time needed for installation.

Vehicle Compatibility

What vehicles is it compatible with?

43 Uppababy Knox 0 Votes Car, SUV, Truck

78 Nuna PIPA RX 0 Votes Car, SUV, Truck, Van

Uppababy Knox
Uppababy Knox

The Uppababy Knox is compatible with most car types, including cars, SUVs, and trucks, ensuring it can be used across various family vehicles.

Nuna PIPA RX
Nuna PIPA RX

The Nuna PIPA RX is compatible with most cars, SUVs, trucks, and vans, making it a versatile option that fits a variety of vehicle types.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 54 Updated at 2026-04-14 08:41:43: 80
Score info for Uppababy Knox:
We base our scoring on 'Vehicle Compatibility' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Vehicle Compatibility' on the following:

Shows what type of vehicles the seat fits into.

Base Included

Is a base included?

100 Uppababy Knox 0 Votes Yes

91 Nuna PIPA RX 0 Votes Yes

Nuna PIPA RX
Nuna PIPA RX

The car seat comes with a detachable base, which allows for easy installation and removal, making it more convenient for parents who frequently move the seat between cars.

Whether the base is provided with the product.

Built-in Level Indicator

Does it have a level indicator?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
Uppababy Knox

The built-in level indicator makes it easier for parents to install the seat at the correct angle, particularly when installing in rear-facing mode. This feature helps ensure your child is seated in the safest position.

Shows if the seat has a leveling indicator.

Base Compatibility

What type of base compatibility does it have?

30 Uppababy Knox 0 Votes Fixed

93 Nuna PIPA RX 0 Votes Detachable

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 26 Updated at 2026-04-14 08:41:43: 40
Score info for Uppababy Knox:
We base our scoring on 'Base Compatibility' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Base Compatibility' on the following:

Defines whether the seat works with detachable or fixed base.

Rotation Swivel Function

Does it have swivel function?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Whether the seat can rotateswivel for easier access.

Load Leg Support

Does it have load leg support?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Indicates if a load leg is provided for extra stability.

Anti-Rebound Bar

Does it have an anti-rebound bar?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Shows if an anti-rebound bar is included.

Tether Type

What tether type is used?

60 Uppababy Knox 0 Votes Top Tether

23 Nuna PIPA RX 0 Votes Lower Tether

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 66 Updated at 2026-04-14 08:41:43: 70
Score info for Uppababy Knox:
We base our scoring on 'Tether Type' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Tether Type' on the following:

Specifies type of tether used for added safety.

Maintenance & Care 9

Cleaning Instructions

What are the cleaning instructions?

85 Uppababy Knox 0 Votes Machine Wash

83 Nuna PIPA RX 0 Votes Machine Wash

Uppababy Knox
vs
Nuna PIPA RX
Cleaning Instructions

Cleaning Instructions for Uppababy Knox specify Machine Wash Cold, whereas Nuna PIPA RX is Machine Washable without temperature details, both support machine washing for ease of care.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 63 Updated at 2026-04-14 08:41:43: 90
Score info for Uppababy Knox:
We base our scoring on 'Cleaning Instructions' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Cleaning Instructions' on the following:

Recommended method for cleaning the car seat.

Detachable Fabric Parts

Are the fabric parts detachable?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Detachable Fabric Parts

Detachable Fabric Parts are present on both Uppababy Knox and Nuna PIPA RX, aiding in cleaning and maintenance equally.

Shows if fabric components can be removed.

Drying Instructions

What are the drying instructions?

70 Uppababy Knox 0 Votes Air Dry

53 Nuna PIPA RX 0 Votes Air Dry

Uppababy Knox
vs
Nuna PIPA RX
Drying Instructions

Both Uppababy Knox and Nuna PIPA RX specify Air Dry for drying instructions, avoiding dryer use for fabric care.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 46 Updated at 2026-04-14 08:41:43: 50
Score info for Uppababy Knox:
We base our scoring on 'Drying Instructions' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Drying Instructions' on the following:

Specifies how the fabric should be dried.

Spot Clean Only Areas

Are there spot-clean only areas?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Spot Clean Only Areas

Spot Clean Only Areas are not present on either Uppababy Knox or Nuna PIPA RX, permitting overall cleaning rather than spot only.

Areas that must be cleaned by spot cleaning only.

Machine Wash Temperature Limit

What is the machine wash temperature limit?

86 °F 0 Votes
Uppababy Knox
86 °F 0 Votes
Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Machine Wash Temperature Limit

Machine Wash Temperature Limit is 86°F for both Uppababy Knox and Nuna PIPA RX, providing identical guidance for safe washing.

Maximum temperature safe for machine washing.

Replacement Part Availability

Are replacement parts available?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Indicates if replacement parts are available.

Care Label Instructions

What do the care label instructions say?

50 Uppababy Knox 0 Votes Moderate

43 Nuna PIPA RX 0 Votes Clear

Details on the sewn-in care label.

Maintenance Tools Required

Are tools required for maintenance?

0 Uppababy Knox 0 Votes Basic

93 Nuna PIPA RX 0 Votes None

Indicates if any tools are needed for maintenance.

Spare Parts Ordering Process

How can spare parts be ordered?

20 Uppababy Knox 0 Votes Simple

63 Nuna PIPA RX 0 Votes Simple

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 16 Updated at 2026-04-14 08:41:43: 30
Score info for Uppababy Knox:
We base our scoring on 'Spare Parts Ordering Process' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Spare Parts Ordering Process' on the following:

Information on how to order spare parts.

Packaging & Shipping 11

Packaging Length

What is the packaging length?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Length of the product packaging box.

Packaging Width

What is the packaging width?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Width of the product packaging box.

Packaging Height

What is the packaging height?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Height of the product packaging box.

Packaging Weight

What is the box weight?

Who knows? 0 Votes Uppababy Knox (Help us out by suggesting one!)

Who knows? 0 Votes Nuna PIPA RX (Help us out by suggesting one!)

Total weight of the packaged box.

Number of Boxes

How many boxes are included?

0 Uppababy Knox 0 Votes 1

0 Nuna PIPA RX 0 Votes 1

Uppababy Knox
vs
Nuna PIPA RX
Number of Boxes

Both Uppababy Knox and Nuna PIPA RX come packaged in 1 box, indicating similar packaging compactness.

Total number of boxes shipped for the product.

Packaging Type

What type of packaging is used?

20 Uppababy Knox 0 Votes Standard

83 Nuna PIPA RX 0 Votes Eco-Friendly

Uppababy Knox
vs
Nuna PIPA RX
Packaging Type

Packaging Type is Standard for Uppababy Knox and Eco-Friendly for Nuna PIPA RX, with Nuna PIPA RX favoring environmental considerations.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 26 Updated at 2026-04-14 08:41:43: 0
Score info for Uppababy Knox:
We base our scoring on 'Packaging Type' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Packaging Type' on the following:

Type of packaging material used.

Assembly Required

Is assembly required?

Yes 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Whether the product requires assembly after unboxing.

Instruction Manual Included

Is the manual included?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

States if an instruction manual is included.

Tools Included

Are tools included?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Indicates if necessary tools are included.

Shipping Protection Features

Are shipping protection features included?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Extra padding or safety measures for transport.

Country of Shipping Origin

What is the shipping origin country?

95 Uppababy Knox 0 Votes USA

82 Nuna PIPA RX 0 Votes USA

Country from which the product ships.

Policies & Warranty 10

Warranty Coverage Scope

What does the warranty cover?

0 Uppababy Knox 0 Votes Limited

23 Nuna PIPA RX 0 Votes Limited

Uppababy Knox
vs
Nuna PIPA RX
Warranty Coverage Scope

Warranty Coverage Scope is Limited for both Uppababy Knox and Nuna PIPA RX, indicating comparable warranty terms.

Uppababy Knox
vs
Nuna PIPA RX
Score History

Updated at 2026-01-27 05:03:46: 0 Updated at 2026-03-02 04:01:27: 16 Updated at 2026-04-14 08:41:43: 20
Score info for Uppababy Knox:
We base our scoring on 'Warranty Coverage Scope' on the following:
Score info for Nuna PIPA RX:
We base our scoring on 'Warranty Coverage Scope' on the following:

Defines what the warranty covers.

Return Period

What is the return period?

45 days 0 Votes
Uppababy Knox
30 days 0 Votes
Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Return Period

The Return Period is 45 days for Uppababy Knox and 30 days for Nuna PIPA RX, offering a longer return window for Uppababy Knox.

Number of days allowed for product returns.

Warranty Coverage for Fabric

Does the warranty cover fabric?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Warranty Coverage for Fabric

Both Uppababy Knox and Nuna PIPA RX provide Warranty Coverage for Fabric, supporting fabric-related defect claims similarly.

States if warranty includes fabric weardefects.

Extended Warranty Option

Is an extended warranty option available?

No 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Extended Warranty Option

Neither Uppababy Knox nor Nuna PIPA RX offer an Extended Warranty Option, so extended coverage is unavailable for both.

Whether extended warranty is available.

Registration Required for Warranty

Is registration required for warranty?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Registration Required for Warranty

Registration is required for the warranty for both Uppababy Knox and Nuna PIPA RX, ensuring a similar process for warranty activation.

Shows if product registration is needed for warranty.

Customer Support Availability

When is customer support available?

100 Uppababy Knox 0 Votes 24/7

93 Nuna PIPA RX 0 Votes 24/7

Level of customer support provided.

Recall Policy

Is there a recall policy?

Yes 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Indicates if the brand has a recall policy.

Insurance Accident Coverage

Is accident coverage included?

Yes 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Coverage in case of car accident damage.

Replacement Seat Program (post-accident)

Is there a post-accident replacement program?

Yes 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Whether a replacement seat is offered after an accident.

Upgrade/Trade-in Policy

Is there an upgrade or trade-in policy?

Yes 0 Votes Uppababy Knox

No 0 Votes Nuna PIPA RX

Option to upgrade or trade in for a new model.

Accessories & Add-ons 11

Storage Compartments

Does it have storage compartments?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Storage Compartments

Storage Compartments are absent in Uppababy Knox but included in Nuna PIPA RX, allowing more convenient storage with Nuna PIPA RX.

Whether the seat includes compartments for small items.

Toy Attachment Option

Does it allow toy attachment?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Toy Attachment Option

Toy Attachment Option is unavailable on Uppababy Knox but available on Nuna PIPA RX, giving additional entertainment features in Nuna PIPA RX.

Shows if toys can be attached for child entertainment.

Sunshade Extension

Does it include a sunshade extension?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Sunshade Extension

Sunshade Extension is not provided by Uppababy Knox but is available for Nuna PIPA RX, improving sun protection with Nuna PIPA RX.

Indicates if an extendable sunshade is provided.

Cup Holder

Does it include a cup holder?

100 Uppababy Knox 0 Votes Yes

63 Nuna PIPA RX 0 Votes Yes

Uppababy Knox
Uppababy Knox

The included cup holder is a convenient addition, allowing toddlers to have their drinks easily accessible during car rides. It can be attached to either side of the seat.

Nuna PIPA RX
Nuna PIPA RX

The cup holder included with the car seat adds extra convenience for parents by providing a place to store drinks, making longer trips more comfortable.

States if the car seat comes with a cup holder.

Travel Bag Compatibility

Is it compatible with travel bags?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Nuna PIPA RX
Nuna PIPA RX

The Nuna PIPA RX is compatible with a travel bag, allowing for easy and safe transport of the car seat when traveling by air or car.

Shows if the seat can fit into a travelstorage bag.

Mosquito Net Compatibility

Is it compatible with mosquito nets?

No 0 Votes Uppababy Knox

Yes 1 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Mosquito Net Compatibility

Mosquito Net Compatibility is not available on Uppababy Knox but is on Nuna PIPA RX, enhancing protection against insects for Nuna PIPA RX.

Indicates if a mosquito net can be attached.

Nuna PIPA RX supports mosquito net compatibility which is great for outdoor use.

See more

Snack Tray

Does it include a snack tray?

0 Uppababy Knox 0 Votes No

93 Nuna PIPA RX 0 Votes Yes

Shows if a snack tray is provided.

Carrying Handle

Does it have a carrying handle?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Indicates if the seat has a handle for carrying.

Rain Cover Compatibility

Is it compatible with a rain cover?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Whether the seat can be fitted with a rain cover.

Seat Protector Mat

Is a seat protector mat included?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Whether a mat is included to protect the vehicle seat.

Organizer Pocket

Does it have an organizer pocket?

No 0 Votes Uppababy Knox

Yes 0 Votes Nuna PIPA RX

Uppababy Knox
vs
Nuna PIPA RX
Organizer Pocket

Neither Uppababy Knox nor Nuna PIPA RX include an Organizer Pocket, so neither offers this organization feature.

Extra pocket to keep small essentials organized.

Surveys

Because hot takes deserve votes.

Comfortness

How comfortable does this car seat feel during use?

Plush and supportive — Maximum comfort
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Soft and cozy — Very comfortable
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Decently padded — Feels okay
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
A bit rough — Could be better
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Hard and stiff — Not comfortable at all
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX

Ease of Installation

How easy is it to install this car seat securely?

Super simple — Under 5 minutes
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Quick and easy — 5 to 10 minutes
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Straightforward — 10 to 20 minutes
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Tricky but doable — 20 to 30 minutes
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Frustrating and confusing — Took over 30 minutes
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX

Weight

How heavy is this car seat to carry and move around?

Ultra-light — Under 15 pounds
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Lightweight — 15 to 20 pounds
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Manageable — 20 to 25 pounds
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Heavy — 25 to 30 pounds
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Very heavy — Over 30 pounds
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX

Durability

How durable and long-lasting does this car seat feel?

Built to last — Over 5 years
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Strong — 3 to 5 years
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Decent — 2 to 3 years
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Weak — 1 to 2 years
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Flimsy — Less than 1 year
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX

Size and Fit

How well does this car seat fit in a standard vehicle?

Slim and perfect — Under 18 inches wide
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Compact fit — 18 to 20 inches wide
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Moderate fit — 20 to 22 inches wide
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Large fit — 22 to 24 inches wide
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Way too bulky — Over 24 inches wide
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX

Ease of Cleaning

How easy is it to clean this car seat after spills or messes?

Super easy — Removable and washable covers
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Easy clean — Wipes off quickly
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Average effort — Some parts easy, some not
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Pretty difficult — Lots of effort required
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Painful process — Needs deep scrubbing
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX

Noise Level

How noisy are the straps, buckles, or parts of this car seat during use?

Silent — No noise at all
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Quiet — Rarely makes noise
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Average — Some minor sounds
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Noticeably noisy — Can be distracting
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Very noisy — Constant squeaks and clicks
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX

Design Appeal

How attractive does the design of this car seat look?

Sleek and eye-catching
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Stylish and modern
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Decent but nothing special
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Plain and simple
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Outdated and dull
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX

Pricing

How would you rate the price of this car seat?

Great value for money
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Pretty good price
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Fair deal
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Kinda pricey
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Crazy expensive
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX

Material

How breathable and temperature-friendly is the material of this car seat?

Very breathable — Stays cool even on hot days
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Comfortable — Minimal heat buildup
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Average — Warm after long use
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Hot — Feels sweaty in warm weather
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX
Uncomfortable — Traps heat and feels sticky
0 Votes
Uppababy Knox
0 Votes
Nuna PIPA RX

Guides 2

Files 1

All About Uppababy Knox

media-amazon.com
media-amazon.com

Files 1

All About Nuna PIPA RX

nunababy.com
nunababy.com

Reviews 0

The good, the bad, and the brutally honest.

Average Rating

Uppababy
Uppababy
Uppababy Knox
Uppababy Knox
0 / 5 0 Reviews
Nuna
Nuna
Nuna PIPA RX
Nuna PIPA RX
0 / 5 0 Reviews

Discussions 0

Thoughts, takes, and hot debates.

Awards 5

Only the best made it here.
20

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13

Best Travel Car Seat

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15

Best Car Seat For 1 Year Old

10 Champs & 5 Wannabes — Which of these options stands out for your little one’s safety and comfort?
15

Best Infant Car Seat

10 Champs & 5 Wannabes — Which car seat offers the safest ride for your baby?

Collections 0

Treasures You’ve picked. No fluff, all fun.

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Other Nuna Car Seats 20

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Uppababy Knox
Nuna PIPA RX
Nuna
Nuna
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vs