SKU: 54813751652
britax marathon size

britax marathon size Britax Poplar Convertible Car Seat (Cobalt Onyx)

$21.55 $23.94
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  • USA
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Ships within 48 hours · Estimated delivery Oct 9 - Oct 14

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For Your Every Summer RSVP, with Code: SUMMER15

Description

britax marathon size Britax Poplar Convertible Car Seat (Cobalt Onyx)This item is an open box model and includes full manufacturer warranty. Purchase online for store pickup, we cannot ship these If you need to come in and test this model out as well as others in our showroom, be sure to book a consultation through our website. Ready to go with room to grow! The Britax Poplar Convertible Car Seat takes the stress out of moving to the next car seat stage thanks to the patented ClickTight Installation and slim SpaceSaver

This item is an open box model and includes full manufacturer warranty.

Purchase online for store pickup, we cannot ship these

If you need to come in and test this model out as well as others in our showroom, be sure to book a consultation through our website.

Ready to go with room to grow! The Britax Poplar 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 car seat accommodates up to 50 pounds rear facing to help keep your child riding safely even longer and easily switches to a forward facing car seat as your child grows. ClickTight Technology installation provides fully open seat belt paths that are clearly labeled and easy to access, and the automatic tensioner takes care of the tightening. Slim outside and spacious inside, the toddler car seat features 17" SpaceSaver technology designed to fit 3-across* without compromising on trusted Britax safety and premium comfort. The Britax car seat boasts a patented SafeCell® crumple zone and V-shaped top tether to help manage crash energy. The reinforced frame and belt paths provide strength and stability. Rear facing car seat cover fabrics are naturally flame retardant with no added FR chemicals and safe to machine wash and dry. *Britax cannot guarantee 3-across installation fitment in all vehicles

  • CONVERTIBLE DESIGN: Works as a rear facing car seat with the infant insert, rear facing and converts to a forward facing car seat
  • CLICKTIGHT INSTALLATION: With ClickTight, you know it’s right in just 3 easy steps: open, buckle and close 
  • INFANT INSERT: Specifically designed to fit newborns 22 lbs and under 
  • 5-POINT SAFETY HARNESS: Helps evenly distribute crash energy to keep your child safe
  • CONVENIENT BUCKLE: Fully open seat belt paths are clearly labeled and easy to access, while the automatic tensioner takes care of the tightening
  • PATENTED V-SHAPED TOP TETHER: Has 2 connection points to help slow and reduce forward movement in a crash; easily stores away when not in use
  • FLAME RETARDANT: The fabric is naturally flame retardant with no added FR chemicals
  • SAFECELL® TECHNOLOGY: Acts as a crumple zone, helping to keep crash energy away from your child 
  • ADJUSTABLE HARNESS: The 14-position harness and headrest move with one hand to grow with your child 
  • 5-POINT SAFETY HARNESS: Helps evenly distribute crash energy to keep your child safe
  • WASHER AND DRYER-FRIENDLY: No more hand washing or waiting for the cover to air-dry; just quick and easy cleanup, so you can keep moving
  • DISHWASHER-SAFE CUP HOLDERS: The 2 cup holders slide in-and-out for easy cleaning between rides
  • EASY-READ LEVEL INDICATORS: The 6-position and quick-adjust recline help you find the most comfortable fit for your child and the best fit for your vehicle

Specifications

  • Product Dimensions: 20.5"L x 17"W x 23.5"H
  • Harness Slot Heights: 8", 8.7", 9.4", 10.1", 10.8", 11.5", 12.2", 12.9", 13.6", 14.3", 15", 15.7", 16.4", 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: 54813751652

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4.8 ★★★★★
Based on 13 reviews
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Verified Purchase
Nic Murrell
New York, US
★★★★★ 5
Hot sleepers need this
Color: Haze Blue, Size: King(106"*90")
i love this, im a very hot sleeper but this has been a game changer for me at night, its so soft and breathable i can sleep at night without waking up so hot. it doesnt hold odor and for the price of this its so worth it, i wish they had different colors cause light colors stain easier but i love the one i got.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
K
Verified Purchase
Kendra embrey
San Leandro, US
★★★★★ 5
Cool and looks good
Color: Haze Blue, Size: King(106"*90")
Looks really nice and cooling. We love it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
D
Verified Purchase
Danielle
Alexandria, US
★★★★★ 5
Love it! Both sides, soft, cool and cozy
I am a very HOT sleeper and I love this blanket! I have a couple other cooling blankets including the Rest brand which is now extremely expensive. This blanket is just as good as Rest's, if not better because it has two different sides. The cooling side does stay very cold to the touch and the microfiber side is very cozy and snuggy without overheating me. I like the weight of the blanket it's not too heavy but it's not too light or thin. Even my cat loves this blanket! She has a lot of blankets/ places to sleep but often I find her on my bed curled up on this blanket in particular. Just be sure to always wash in cold water and dry without any heat. I wash mine in cold and either use the no heat cycle of my dryer or more often air dry it, hanging it over my bedroom door with a fan pointed on it. Because of the material it dries quickly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 4, 2025
L
Verified Purchase
Lea A Bramlett
Los Angeles, US
★★★★★ 5
Cooling
Color: Dark Gray Pinstripe, Size: King(108"x90")
Very lightweight & cooling!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
G
Gabby
Fort Morgan, US
★★★★★ 5
Cool, lightweight, and surprisingly comfortable!
I absolutely love this cooling comforter! The first thing I noticed is how lightweight it is. It comes in at just over 3 pounds, so it’s not thick or bulky at all, which I really appreciate. It feels easy to move around and doesn’t weigh you down while you’re sleeping. I chose the queen size in dark gray. It’s reversible, which is such a nice bonus. One side has a simple white stripe pattern that gives it a little personality, and the other side is a solid gray. The solid gray side is the cooling side, and oh my goodness, it feels so silky and smooth to the touch. That cool-to-the-touch feeling is really noticeable when you first get under it. I didn’t have any issues with it sliding off the bed, but I’ll mention that I don’t toss and turn a lot at night, so that may be part of it. If you’re someone who moves around more, your experience might be a little different. As far as washing goes, I did notice a small inconsistency. The product description recommends hanging it to dry, but the tag on the comforter says it can be machine washed and dried. I’m going to go ahead and follow the tag instructions and tumble dry it. I’ll definitely come back and update if I notice any issues after machine drying it. I live in the South and right now our weather is actually pretty mild so it’s a little hard to say just how much of the cooling effect is from the blanket versus the temperature in the house. That said, I do feel like it’s helping. I haven’t been waking up hot and the fabric itself definitely feels cool and breathable so I’m excited to see how it performs when the real heat kicks in. I’m also really pleased with the overall quality. The stitching looks clean, there are no loose threads and everything feels well made and thoughtfully put together. It gives me confidence that it will hold up nicely over time. This doesn’t affect my rating, but I do wish there were more color or pattern options to choose from. It would be fun to have a few more styles, especially since it’s such a nice-looking comforter. 5 stars for its lightweight feel, silky cooling fabric, and solid, well-made construction.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026

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