# Nuna PIPA rx Infant Car Seat vs Clek Foonf Slim Convertible Car Seat: specs and price compared

A sourced, side-by-side comparison of the Nuna PIPA rx Infant Car Seat (Nuna) and Clek Foonf Slim Convertible Car Seat (Clek) among car seats. Nuna PIPA rx Infant Car Seat is the cheaper of the two at $550.

## Side by side

| Spec | Nuna PIPA rx Infant Car Seat | Clek Foonf Slim Convertible Car Seat |
| --- | --- | --- |
| US price | $550 | $559.99 |
| Brand | Nuna | Clek |
| Released | — | 2012 |
| Type | infant | convertible |
| Min weight (lb) | 4 | 14 |
| Max weight (lb) | 30 | 65 |
| Height limit (in) | 30 in | 49 in (FF); 43 in (RF) |
| Install | both | both |
| Steel frame | Yes | Yes |
| Expiration years | 7 | 9 |

## Key differences

- Type: Nuna PIPA rx Infant Car Seat infant vs Clek Foonf Slim Convertible Car Seat convertible
- Min weight (lb): Nuna PIPA rx Infant Car Seat 4 vs Clek Foonf Slim Convertible Car Seat 14
- Max weight (lb): Nuna PIPA rx Infant Car Seat 30 vs Clek Foonf Slim Convertible Car Seat 65
- Height limit (in): Nuna PIPA rx Infant Car Seat 30 in vs Clek Foonf Slim Convertible Car Seat 49 in (FF); 43 in (RF)
- Expiration years: Nuna PIPA rx Infant Car Seat 7 vs Clek Foonf Slim Convertible Car Seat 9

## What reviewers say

**Nuna PIPA rx Infant Car Seat** — Only one whitelisted tester (Wirecutter/NYT) covers the exact Pipa rx, and only within its competition roundup rather than as a standalone hands-on pick. It praises the well-designed Relx base that ships with the rx and calls the Nuna line lightweight, stylish, and easy to use, but concludes that at close to $400 the Uppababy Aria (its upgrade pick) is a far better choice. No crash-test or other measurements are reported for the rx. (1 sourced review.)

**Clek Foonf Slim Convertible Car Seat** — Only one whitelisted tester, the Good Housekeeping Institute, covers this Clek Foonf, and its notes are hands-on-qualitative (a lab staffer's long-term family use) rather than lab-measured. GHI names it Best Premium, praising tank-like steel-and-magnesium durability and a narrow build that can line up three-across, while flagging its 38-lb heft, rethread harness, and long-ride comfort. (1 sourced review.)

## Sources

- Nuna PIPA rx Infant Car Seat: https://nunababy.com/usa/pipa-rx-infant-car-seat-with-relx-base (nunababy.com, verified 2026-06-19)
- Clek Foonf Slim Convertible Car Seat: https://clekinc.com/products/foonf (clekinc.com, verified 2026-06-19)

Canonical: https://frontdeskreview.com/gear/car-seats/nuna-pipa-rx-vs-clek-foonf/
Cite: Per The Front Desk Review, Nuna PIPA rx Infant Car Seat ($550) vs Clek Foonf Slim Convertible Car Seat ($559.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/car-seats/nuna-pipa-rx-vs-clek-foonf/
License: CC BY 4.0.