britax marathon 70 onyx Britax Poplar S Convertible Car Seat
SKU: 53917291931
britax marathon 70 onyx

britax marathon 70 onyx Britax Poplar S Convertible Car Seat

Sale price$23.37 Regular price$25.97
Save 10%

Pay in installments of $6.49 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 2 - Jul 7

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

britax marathon 70 onyx Britax Poplar S Convertible Car SeatReady 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 and easily switches to a forward facing car seat as your child grows. ClickTight technology provides fully open seat belt paths that are clearly labeled and easy to access, and

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 and easily switches to a forward-facing car seat as your child grows. 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 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

Features:

  • Convertible Design: Works as a rear-facing car seat with the infant insert and converts to a forward-facing car seat as your child grows 
  • ClickTight® Installation: With ClickTight, you know it’s right in just 3 easy steps: open, thread and buckle, click it closed 
  • ReboundReduce™ Stability Bar: Carbon steel bar easily attaches to the car seat when installed rear-facing to minimize the movement in the event of a crash; must be removed when installed forward-facing 
  • SpaceSaver™ Design: 17-inch seat is designed to fit 3-across without compromising on trusted Britax safety and premium comfort. *Britax cannot guarantee 3-across installation fitment in all vehicles 
  • Infant Insert: Specifically helps to properly position newborns 22 lbs and under 
  • 5-Point Safety Harness: Helps evenly distribute crash energy to keep your child safe 
  • 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 
  • Easy-Read Level Indicators: The 6-position and quick-adjust recline helps you find the most comfortable fit for your child and the best fit for your vehicle 
  • Naturally Flame-Retardant Fabrics: With no added FR chemicals 
  • SafeCell® Technology: Acts as a crumple zone, helping to keep crash energy away from your child 
  • Easy-Adjust Harness: The 14-position no-rethread harness and headrest move to help create the perfect fit 
  • Carbon Steel Frame: Reinforces the seat structure to help keep it sturdy and stabilized 
  • Flip-Forward Buckle Pad: Stays out of the way for easy boarding 
  • 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
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: 53917291931

Discover Niche Categories That Outsell britax marathon 70 onyx

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 1520 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Scott Liske
San Leandro, US
★★★★★ 5
Bright
Color: 7*5in Cube LED Pod
Very bright, good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
R
Verified Purchase
Riik
Charlottesville, US
★★★★★ 5
Easy to install
Color: 4*2.5in Cube LED Pod
Definitely more than I expected. .. dang good product and easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
R
Verified Purchase
rkruz
Grantham, US
★★★★★ 4
Easy Install Onto Jeep JKU, No Switch Backlight or Mounting Holes, Great Customer Service
Color: 5in Cube LED Pod, Color: 5in Cube LED Pod
I installed the Auxbeam 5" 168W LED Cube Pods onto my Jeep JKU Anniversary Steel Bumper. It was an easy install with some YouTube videos to help me snake the cables into the cab. The unused holes in the steel bumper were the perfect size to fit the mounting bolts on the pod lights, and there was plenty of room to reach under the top edge of the bumper to install the nuts with some Loctite. To snake the provided cable through the firewall, I had to remove the installed socket. This was easy to do by simply recessing the retainer clip on each pin, taking a picture of the wired connector before releasing the wires so I knew how to reassemble, snaking the connectorless cable through the firewall into the cab where the pins were then reinserted and locked into the connector. I dressed the cable by zip tie to the existing wire harness at the top of the engine bay. In the cab, I pulled the side panel from the dash (driver's side) and made a small hole for the cable in the panel. After cleaning the dash with alcohol, the adhesive-backed switch seems to hold nicely in place. The lights were very bright and did a great job of illuminating the front and sides of the trail ahead of me. No backlight on the switch, which is a necessity, and I dont understand why that feature is not present. Also, there is no through hole to mount as the adhesive back won't stay attached, so the lack of a mounting hole is a big negative as well. 5 Month UPDATE: One of the lights got water inside. I noticed two screws that hold the glass cover were loose on the bottom of both sides. The other light also had the same loose screws but no water under the glass. I contacted Auxbeam, and they replaced the entire set in 2 days. Very awesome customer service.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 25, 2023
K
Verified Purchase
Kevin Sanguansukdikosol
Draper, US
★★★★★ 5
Brightness and quality
Color: 4*2.5in Cube LED Pod
Got this for my 2024 Crosstrek. Got this one specifically due to its functionality that I wanted, quality for the price and it looks great especially DRL. I leave the Amber cover on most of the time. If you want the DRL to be on while the car is on, you can do that but it has to be rewired which I did. Love the brightness. I’ve been having this on my Crosstrek for a few months now and have no issues.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
T
Verified Purchase
Thomas Chapman
Houston, US
★★★★★ 5
Bright lights
Color: 4*2.5in Cube LED Pod
Installed these on my Bronco as ditch lights. Very bright light and I like that you can have them be white or put the cover on them for and amber light look. Took about 30 minutes to install and wire to the upfitter switches. They shoot a wide angle covering your blind spots on dark roads. I got these to replace a three inch ditch light. They're made from heavy duty metal and stand up to the extreme weather. I like them so much that I purchased the seven inch lights and install them on the front bumper. For what they cost it was a price that I couldn't pass up. I highly recommend these lights.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026

recommand products