SKU: 54855294878
britax marathon booster

britax marathon booster Britax Grow With You Harness Booster Car Seat

Sale price$24.43 Regular price$27.14
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 13 - Sep 18

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For Your Every Summer RSVP, with Code: SUMMER15

Description

britax marathon booster 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: 54855294878

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4.4 ★★★★★
Based on 24 reviews
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Rebekah
Louisville, US
★★★★★ 5
Comfortable and cute
Size: 9 Wide, Color: Cocoa Brown Satin, Size: 9 Wide, Color: Cocoa Brown Satin
I haven't worn them out of the house but they feel comfortable standing in them and they match the dress.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
A
Verified Purchase
Amazon Customer
San Leandro, US
★★★★★ 5
Big Foot
Size: 12 Wide, Color: Pearl White Satin Fabric
I am very satisfied coming from a big footed woman 😅 I have trouble finding cute shoes in my size let alone Wide shoes that are actually cute. This heels are not only just super pretty but comfortable too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 27, 2026
A
Verified Purchase
Amy Fickle
Lake Worth, US
★★★★★ 1
Used not new
Size: 5, Color: Natural/Gold
Love the shoes but the item was clearly used based on feet marks inside shoe and scuffs on bottom of shoe.
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Reviewed in the United States on March 31, 2026
S
Verified Purchase
Sabrina Arrowsmith
Charlottesville, US
★★★★★ 3
1/2 size too big!!!
Size: 7 Wide, Color: Black Leather
My entire adult life I have been a size 7, regardless of brand, I should have known right away when I tried them on, but I was so excited to go out to dinner in them that I ignored the obvious, they are for sure a 1/2 size too large for me. Thank God for the ankle strap, otherwise they would have had me a@@ over tea kettle the first time I got out of the car. I feel like I'm a kid, wearing my mom's shoes. I shouldn't have worn them out. I should have gotten a smaller size. I still might. They're super cute and comfortable. But SIZE DOWN. Especially if you ordered wide. This is now the second pair in a week I purchased from Naturalizer, and apparently they just make shoes that are 1/2 a size bigger than everyone else. I managed to return the other pair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2025
A
Verified Purchase
Amy S
Birmingham, US
★★★★★ 5
Cute great size got a lot of compliments
Color: Obsidian Black
Loved this. Got it on sale dor 34.99 and worth it it seems like a good staple for events / outtings. Even daily use probably, but I got it for a wedding event.weekend and got so many compliments! Good closure zipper had no issues. I like the material doesn’t look or feel cheap, good color. (I got black) but saw someone at event with gold one and also adorable!!! Storage is huge for me - it easily fit my phone, a couple of pads and tampons, small hand sanitizer, small aquaphor with room! I also had sunglasses in there at one point and surprisingly zipped fine with all of that. Overall convenient for storage, aesthetically pleasing, good material-quality. Cons: the chain strap bothered my neck a little bit after wearing it but that’s a me problem. Not the purse/way it was made. But something to consider.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026

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