SKU: 23128157459
britax marathon onyx

britax marathon onyx Britax Poplar S Convertible Car Seat Sand Onyx

Sale price$23.08 Regular price$25.64
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Ships within 48 hours · Estimated delivery Sep 24 - Sep 29

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Description

britax marathon onyx Britax Poplar S Convertible Car Seat Sand OnyxReady to go with room to grow! The Poplar S convertible car seat takes the stress out of moving to the next car seat stage thanks to the patented ClickTight installation and slim SpaceSaver design. This convertible car seat accommodates up to 50 lbs when installed rear facing, allowing your child to ride rear facing longer. It easily switches to a forward facing car seat as your child grows, accommodating up to 65 lbs. ClickTight technology provides

Ready to go with room to grow! The Poplar® S convertible car seat takes the stress out of moving to the next car seat stage thanks to the patented ClickTight® installation and slim SpaceSaver™ design. This convertible car seat accommodates up to 50 lbs when installed rear-facing, allowing your child to ride rear-facing longer. It easily switches to a forward-facing car seat as your child grows, accommodating up to 65 lbs. ClickTight technology provides fully open seat belt paths that are clearly labeled and easy to access, and the automatic tensioner takes care of the tightening.

This baby car seat lets you easily adjust the 14-position no-rethread harness and headrest to help create the perfect fit. The removable infant insert helps to properly position infants 22 lbs and under. There are 2 additional premium inserts that help create refined comfort and a tailored fit. The ReboundReduce™ stability bar easily attaches to the car seat when installed rear-facing, helping to minimize movement in the event of a crash. Slim outside and spacious inside, this convertible car seat features 17-inch SpaceSaver™ technology designed to fit 3-across* without compromising on trusted Britax® safety and premium comfort. The rear-facing car seat includes a patented SafeCell® crumple zone and a V-shaped top tether to help manage crash energy. Carbon steel frame and belt paths provide strength and stability. The car seat cover fabrics are naturally flame-retardant with no added FR chemicals, and they’re safe to machine wash and dry time and again. *Britax cannot guarantee 3-across installation fitment in all vehicles

Recommendation – Britax strongly recommends:

Children ride rear-facing to the highest weight or height specified

Children should remain in a child seat with a 5-point harness until reaching the maximum weight or height allowed

The top tether be used at ALL times when installing the child restraint forward-facing.

Specifications

  • Product Dimensions: 20.5" x 17" x 23.5"
  • Harness Slot Heights: 8" - 17"
  • Buckle Strap Depths: 4" - 7"
  • Child Weight: 5-65 lbs
  • Rear-facing Harnessed Height: Less than 49"
  • Forward-facing Harnessed Height: Less than 49"
  • Rear-facing Harnessed Weight: 5-50 lbs
  • Forward-facing Harnessed Weight: 30-65 lbs
  • Seat Area Depth/Width: 11" / 12"
  • Shoulder Width: 14"
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 23128157459

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4.9 ★★★★★
Based on 14 reviews
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Verified Purchase
David P.
Battle Creek, US
★★★★★ 5
Excellent non-slip wide mat
Color: Navy Blue
I've used this for 2 months now and it's been a great buy. Extra wide but not bulky at all. The grippy ridges on both sides help a lot. Excellent overall and good quality for medium thickness.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
C
Verified Purchase
Cassidy Family
Carnegie, US
★★★★★ 5
Highly recommend!
Color: Navy Blue
This mat is amazing. It is super thick and great for sensitive knees. Very good grip. Worth every penny. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
K
Verified Purchase
Kadoodle
Cuba, US
★★★★★ 5
Love this mat!
Color: Pale Green
I love this mat. I use it 5x per week with my strength training, cardio, stretching, whaever workouts. I prefer to be barefoot on it. It’s holding up well and is easy to roll up and store when not in use. I like the size, it gives me enough room to do whatever workout I need to do. The green color is very cute too! I’m 5’3”
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
C
Verified Purchase
Cander
Port Orchard, US
★★★★★ 5
Great quality
Color: Pale Green
Have had it for about a month and it’s holding up great! Large comfortable mat that does not slide.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
S
Verified Purchase
Shey
Birmingham, US
★★★★★ 4
Great size, not great traction
Color: Smoky Pink
Absolutely love the size and thickness of the mat. Perfect for Pilates. The traction is not as good as advertised. Definitely still slippery for certain positions. But overall good price for the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026

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