SKU: 22870940017
britax marathon 70 g3 convertible car seat onyx

britax marathon 70 g3 convertible car seat onyx Britax Poplar Convertible Car Seat

Sale price$23.50 Regular price$26.11
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 22 - Sep 27

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

britax marathon 70 g3 convertible car seat onyx Britax Poplar Convertible Car SeatReady 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

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

Why You'll Love it

  • ClickTight Installation: Install with confidence in three easy steps: open, thread & buckle, click it closed
  • SpaceSaver Design: Slim outside, spacious inside: 17” seat design without compromising on trusted Britax safety & premium comfort
  • Extended Rear-Facing: Fits up to 50 lbs and 49" to help keep your growing child riding rear-facing longer

Britax Poplar Convertible Car Seat More Features:

  • 14-Position, Quick-Adjust Headrest & Harness: Create the proper fit as your child grows
  • Patented V-Shaped Tether: Staged-release stitches help slow & reduce forward movement during a crash
  • Dishwasher Safe Cup Holders: Removable for easy cleaning between car rides
  • 6-Position, Quick-Adjust Recline: Helps you find the most comfortable fit for your child & the best fit for your vehicle
  • SafeCell Technology: Acts as a crumple zone, helping to keep crash energy away from your child
  • 5-Point Safety Harness: Helps evenly distribute crash energy to keep your child safe
  • Naturally Flame-Retardant Fabrics: With no added FR chemicals
  • Carbon Steel Frame: Reinforces the seat structure to help keep it sturdy and stabilized

Britax Poplar Convertible Car Seat Features SafeWash Fabrics:

Safe to machine wash & dry: Fabrics are free of FR chemicals and washer and dryer-friendly to get you back on the road faster.

Product Specifications:

  • Brand: Britax
  • Magenta Onyx SKU: E1C933Q, UPC: 652182743079
  • Stone Onyx SKU: E1C933M, UPC: 652182743055
  • Cobalt Onyx SKU: E1C933R, UPC: 652182743086
  • Glacier Graphite SKU: E1C933N, UPC: 652182743062

See Entire Britax Collection

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: 22870940017

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Pamela Osborne
Dallas, US
★★★★★ 5
Good quality stuff
Color: Blue, Size: Large
Great, looking shirt fits well. Great price great company. Great workmanship is the place for shopping at.
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Reviewed in the United States on June 4, 2026
O
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Olga Torres
Belleville, US
★★★★★ 5
Buena relación calidad - precio .talla L
Color: Blue, Size: Large
Buena calidad - precio , son suaves , se ven modernas , te sirve para el trabajo o una salida ocasional . 5.7 , 165 lbs talla L
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Reviewed in the United States on May 18, 2026
A
ADD TO CART
Louisville, US
★★★★★ 4
Quality meets style
Color: White, Size: Large, Color: White, Size: Large
This is an Oxford button-down dress shirt that is a great example of quality craftsmanship paired with classic style. The 50% polyester and 50% cotton fabric has a nice substantial weight to it that feels durable without being too heavy, making it perfect for a polished summer look. The detailed design around the collar adds a subtle touch of casual sophistication, and the chest pocket keeps it practical and versatile. The construction is impressive, with securely attached buttons that reinforce the overall sense of durability. I also appreciated the inclusion of two extra button which is a thoughtful and useful addition. The size large did run a bit snug so I’ll be ordering the next size up. This is a well-made shirt, of a quality-feel material. This brand continues to deliver on both quality and style, and the price feels more than fair for what you’re getting. Overall, a very nice summer dress shirt that I’d gladly recommend.
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Reviewed in the United States on March 30, 2026
J
Verified Purchase
Jim Schuster
West Palm Beach, US
★★★★★ 3
Good quality but need to be aware.
Color: White, Size: XX-Large
Good quality but know Sizes run small so size up when ordering if you are a US customer. Also chest is tight even when sizing up.
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Reviewed in the United States on June 2, 2026
L
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Lindsay
Houston, US
★★★★★ 5
Upsize
Color: Pink, Size: XX-Large
Knowing to upsize before I bought the shirt was a good thing to know. Otherwise, it is a very nice shirt
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026

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