Pay in installments of $5.04 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Oct 12 - Oct 17
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
nuna car seat stroller base Nuna Flex System Frame + PIPA series adapter – ButtercupMeet the stroller frame that redefines mobility for modern parents. Designed to fit any PIPA series car seat, the SWIV & TRIV bassinet, and the Flex system stroller seat, its built with carbon fiber reinforced aluminum for unmatched strength and featherlight handling. The one hand fold? Smooth and intuitive. The carry? Effortless. And the look? Sleek, minimal, and engineered for everyday elegance. This Flex system stroller frame offers a more
Meet the stroller frame that redefines mobility for modern parents. Designed to fit any PIPA series car seat, the SWIV & TRIV bassinet, and the Flex system stroller seat, it’s built with carbon fiber reinforced aluminum for unmatched strength and featherlight handling.
The one-hand fold? Smooth and intuitive. The carry? Effortless. And the look? Sleek, minimal, and engineered for everyday elegance. This Flex system stroller frame offers a more intuitive way to move through every stage, from first newborn outings to spirited toddler adventures.
Feature
- Ultra-light frame (11.3 lbs) folds compactly and stands on its own
- Installs in seconds—no base needed
- Smooth all-wheel suspension with puncture-proof tires
- One-touch rear-wheel brake for quick, secure stops
- UPF 50+ canopy with flip-out eyeshade and peek-a-boo window
- Soft Merino wool + TENCEL™ inserts for comfort and breathability
- Adjustable handle and roomy 22 lb basket for daily essentials
- Luxe leatherette accents add a polished touch
- Machine washable seat fabrics and inserts
- Compatible with any PIPA™ car seat, the Flex system seat, and SWIV™ & TRIV™ bassinets
What's included
- Flex System stroller frame
- Folding ring adapter
Specifications
Recommended use:
Up to 50 lbs
Frame Weight: 8.5 lbs
Frame + Adapter Weight: 11.3 lbs
Stroller dimensions (open): L 37 x W 21.5 x H 43.5 in
Stroller dimensions (folded): L 23 x W 21.5 x H 29.3 in
Folded Dimensions (approx.): 21.5" W x 29.3" D x 23" H
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 27 reviews
Sort
Product Reviews
★★★★★ 4
X-Large is about a size 12-13 shoe size foot USA.
Material Type: Black - 3 Pairs, Size: X-Large
I love them they work fantastic. I am a big guy with swollen feet. Wear size 12 to 13 USA Shoes. They fit me just fine not tight. My feet felt good after wearing them for two days. Some dry skin pulled off with them and it says to wash by hand. I dont know about the durability but I am hoping to get about 5 uses per pair. Before they become unusable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
★★★★★ 5
Comfortable
Material Type: Black - 2 Pairs, Size: X-Large, Material Type: Black - 2 Pairs, Size: X-Large
I have very sensitive skin, so I usually need to wear socks at all times. These are especially comfortable because they don’t cover the toes, which helps with temperature control. The material is well-balanced—not too thick or too thin—and has just the right amount of stretch. I also appreciate the large traction area, which adds stability. Another plus is that they are completely fragrance-free.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
★★★★★ 5
Great Heel Socks
Material Type: Black - 3 Pairs, Size: Large
I don't know how they work but it's wonderful. I've had rough heel problems for a long time. I wear these everyday and my heels are not rough. They're not baby bottom smooth, but they are not ever going to be. These heel socks also oncce they are properly positioned snap onto the heel. Properly positioning them is easy when you put them on your foot with the heel cup in the correct orientation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 3
Too small
Material Type: Gray - 3 Pairs, Size: X-Large
Too tight! Even size large used for a man with smaller feet is too tight. Also, no instructions for use or care.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Good fit
Material Type: Black - 3 Pairs, Size: X-Large
My husband just started using these and they feel comfortable. Hasn't used them long enough to see if his heels are better. He has a high arch so I bought him the XL and they fit perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026