SKU: 98422748771
britax marathon booster conversion

britax marathon booster conversion Britax Grow With You Harness Booster Car Seat

Sale price$19.25 Regular price$21.39
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

britax marathon booster conversion Britax Grow With You Harness Booster Car SeatGrow With You harness 2 booster car seat grows with your child from toddler to big kid. Its made with premium fabrics and padding for superior comfort and style. Installing the seat is simple using the premium, quick push LATCH connectors. 2 layers of side impact protection surround the head, neck & torso. Plus, SafeCell Technology in the base acts as a crumple zone to help absorb crash energy. Quickly adjust the 9 position harness & headrest using

Grow With You™ harness-2-booster car seat grows with your child from toddler to big kid. It’s made with premium fabrics and padding for superior comfort and style. Installing the seat is simple using the premium, quick-push LATCH connectors. 2 layers of side impact protection surround the head, neck & torso. Plus, SafeCell Technology in the base acts as a crumple zone to help absorb crash energy.

Quickly adjust the 9-position harness & headrest using just one hand for the proper fit as your child grows. Once they’re ready to use the seat belt, the 5-point harness tucks away, transitioning to a belt-positioning booster. Color-coded guides help you and your child route the seat belt through the right paths. With arm rests, cup holders and harness comfort pads, even big kids enjoy the ride.

Features:

  • Harness mode 25lbs - 65 lbs; Booster mode 40 lbs -120 lbs.
  • Stylish, soft-knit fabrics look great in your backseat.
  • SafeCell Technology acts as a crumple zone, helping to absorb crash energy.
  • Industrial strength steel frame reinforces the seat structure to help keep it stabilized.
  • V-shaped tether with staged-release stitches helps slow and reduce forward movement during a crash.
  • 2 Layers of Side Impact Protection: Energy-absorbing shell and foam-lined headrest protect your child’s head, neck, and torso.
  • Premium, quick-push LATCH connectors for simple, secure installation.
  • 9-position, quick-adjust harness & headrest move together using one hand for the proper fit as your child grows.
  • 2-position buckle can be moved outward to accommodate your growing child.
  • 2 recline positions help you find the most comfortable fit for your child and the best fit for your vehicle.
  • 4 cup and snack holders keep drinks, snacks, and toys within reach.
  • Harness comfort pads keep your child’s neck from rubbing against the harness strap.
  • Nap-friendly padding & fabrics for superior comfort and a quiet ride.
  • Color-coded belt guides make it easy for you and your child to route the seat belt through the right paths.
  • Easy-to-remove cover for cleaning without uninstalling the car seat or removing the harness.
  • Flip-forward buckle stays out of the way for easy boarding.
  • Easy-to-clean arm rests help your child ride comfortably.
  • Proudly designed, tested and built in the USA with US and global components for safety and quality.

Specifications:

  • Product Dimensions: 21" L x 19" W x 25" H
  • Car Seat Weight: 23 lbs
  • Child Weight Capacity:
    • Harness mode 25–65 lbs
    • Booster mode 40–120 lbs
  • Child Height Capacity: Up to 63"
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: 98422748771

Discover Niche Categories That Outsell britax marathon booster conversion

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 159 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
B
Verified Purchase
Buffy
Natrona Heights, US
★★★★★ 4
Got this for making omelets
Color: Silver 8Oz (250ml), Color: Silver 8Oz (250ml)
I bought this pitcher/mug mainly for beating eggs when making omelets. It’s a bit smaller than I expected, but it works well for single or double omelets, especially since I usually mix in a few extra ingredients. It did not come with a stirrer, may be it is not included with the 8 Oz mug. I had been using a plastic container before, and this stainless‑steel mug definitely makes a louder noise while stirring, but that’s expected with metal. The mug itself feels well made. Time will tell whether the stainless steel holds up without rusting and whether the handle weld stays strong. The handle is comfortable to grip, and the opening is wide enough to clean with a scour pad. I haven’t put it in the dishwasher yet, but the description says it’s dishwasher‑safe.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
M
Verified Purchase
Mrsblockcolsky
Port Orchard, US
★★★★★ 5
Cute and small!
Color: Silver 8Oz (250ml), Color: Silver 8Oz (250ml)
Smaller than I pictured but its Perfect for doing 4-5ozs of milk, easy to clean, good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 30, 2025
D
Verified Purchase
Deena Robinson
Chelsea, US
★★★★★ 5
Cute
Color: Stainless Steel 12Oz
Cute and dainty
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
B
Verified Purchase
BojiBiker
Chelsea, US
★★★★★ 5
Great frothing pitcher for home use.
Color: Stainless Steel 20 Oz
Great size and shape for frothing. Well made and very good quality, still in great shape after 3 years of daily use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
Y
Verified Purchase
Yogi at the Beach
Alexandria, US
★★★★★ 5
8oz Size Perfect for Small Amounts of Milk
Size: 6.8oz/200ml Silver
This is a quality pitcher with a nice weight to it. I only use 80ml of milk in my cappuccinos and had trouble getting a good microfoam when using a larger pitcher. This little 8oz pitcher is the perfect size and makes it easier to achieve microfoam. The only potential issue I see is the pitcher may overflow if using more than 80ml although this may be due to my technique.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 6, 2026

recommand products