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RELX Infant Car Seat Base for nuna PIPA™ Series Infant Car Seats

Nuna

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Details & care

This convenient base fits your PIPA RELX (sold separately) and makes it so much easier to transfer baby and seat between cars. Five-second True Lock installation makes set up swift, simple and, above all, safe. On-the-go recline keeps baby comfy and supported.

  • Fits all nuna PIPA series infant car seats (sold separately)
  • This car seat is eligible for return in its original, unopened box only
  • Open belt path for easier install
  • Four-position adjustable rigid latch to remove or reduce the gap between vehicle seat and base
  • Four-position on-the-go recline
  • Bubble-free recline angle guides clearly confirm the perfect riding angle
  • Locking three-piece steel stability leg has a wide range of adjustment to fit most vehicles including middle seats
  • Steel stability leg helps minimize forward rotation during impact
  • Colored installation indicators confirm correct connections to the vehicle
  • Anti-rebound panel
  • Plastic/steel
  • Imported
  • Item #5998385
  • Core Product ID 333335RSZM

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Free shipping. Free returns. All the time. Purchases made online can also be returned or exchanged at any Nordstrom store, free of charge. Read more about our shipping & returns policies.

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Nuna

Inspired by the clean lines and ingenuity of Dutch design, nuna offers baby gear that’s simple, practical and stylish. Each and every product is designed to include thoughtful solutions to make family life that much easier. From high chairs and strollers to travel cribs and car seats, nuna provides premium baby gear you and yours can trust for years to come, designed around your life.

Reviews

(67)674.6 out of 5
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Most helpful positive review

May 29, 2022

We bought a second one

This was easy to install and makes it so easy to clip in the Nuna car seat! We bought a second base to put in our other car so it’s easy to go between vehicles with just clicking the car seat into the base instead of strapping it in every time.
LipstickAndLashes
2found this helpful

Most helpful critical review

Apr 17, 2025

Misleading

Despite it proclaiming that it works for all all PIPA series, it does not work for the PIPA urbn series. Should clearly state that the car seat doesn't work for their popular stroller model what features a car seat.
StephanieSMul
Verified purchase
4found this helpful

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5 stars87%
4 stars6%
3 stars0%
2 stars0%
1 star7%

Pros:

Cons:

Current reviews don’t mention any.
Apr 17, 2025

Misleading

Despite it proclaiming that it works for all all PIPA series, it does not work for the PIPA urbn series. Should clearly state that the car seat doesn't work for their popular stroller model what features a car seat.
Verified purchase
StephanieSMul
Size purchased:
One Size
Color:
BLACK
4found this helpful
May 29, 2022

We bought a second one

This was easy to install and makes it so easy to clip in the Nuna car seat! We bought a second base to put in our other car so it’s easy to go between vehicles with just clicking the car seat into the base instead of strapping it in every time.
LipstickAndLashes
2found this helpful
Mar 14, 2026

The base does not fit the PIPA Urbn car seat

This is misleading. I bought it because the description says it works with all Nuna models, but it does not fit the Nuna PIPA Urbn car seat.
Verified purchase
AmandaFR
Size purchased:
One Size
Color:
BLACK
1found this helpful
June 24, 2026

Good Product

The infant car seat base is very will made, but I have found it difficult to attach to the metal car rods. The base hooks extend further out, but how to get them to extend isn't easy to figure out. Illustrations would have been helpful showing this.
Verified purchase
LuckyGrandmaM
Color:
black
Was this helpful?
Apr 2, 2026

Happy with purchase

Very easy to install. Easy to put the car seat in and out.
Verified purchase
MomtoLeo
Color:
Black
Was this helpful?
Aug 24, 2025

Above and Beyond!!

Nic was helpful through everything. When we first looked at a stroller and car seat. To trying to help us purchase online and getting it shipped to our house. To letting us know when a base that is generally not in stock happened to be returned unopened so we could buy it. Just couldn’t be happier with the service he provided for us. We will definitely shop there again and specifically with Nic.
Verified purchase
DustinandChloeMammen
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