SKU: 57276726648
britax marathon convert to booster

britax marathon convert to booster Britax UpNGo Backless Booster Car Seat (Raven Black)

Sale price$20.83 Regular price$23.14
Save 10%

Pay in installments of $5.79 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

britax marathon convert to booster Britax UpNGo Backless Booster Car Seat (Raven Black)The Britax UpNGo backless seat booster gives your child the boost they need to move up into the final car seat stage and go anywhere with confidence. Designed for children from 40 120 lbs and 46 63", this booster combines the portability and convenience that parents look for with kid approved comfort and style. UpNGo is innovatively designed with PosturePlus to help encourage proper posture and seat belt positioning. It also includes a shoulder belt

The Britax UpNGo™ backless seat booster gives your child the boost they need to move up into the final car seat stage and go anywhere with confidence. Designed for children from 40-120 lbs and 46”-63", this booster combines the portability and convenience that parents look for with kid-approved comfort and style. UpNGo is innovatively designed with PosturePlus™ to help encourage proper posture and seat belt positioning. It also includes a shoulder belt guide to help keep the seat belt in the right place. 

 

Specifications
  • Boost, Buckle, Go: Belt-positioning booster lifts your child up to use the vehicle seat belt. 
  • Extended Maximum Capacity: Designed for children from 40-120 lbs and 46”-63".    
  • PosturePlus™ Contoured Seat: Helps encourage proper posture and seat belt positioning.    
  • SpaceSaver™ Design: 17.1” seat leaves plenty of room for siblings & carpoolers! This slim booster seat fits 3 across in most vehicles without compromising safety or comfort. *Britax cannot guarantee 3-across fitment in all vehicles.     
  • Lightweight & Portable: Thanks to the built-in carry handle and lightweight design, you can take this booster anywhere. Weighing under 4 lbs, it’s easy for both caregivers and kids to carry.  
  • Removable SafeWash® Cover: Safe to machine wash and dry. 
  • Naturally Flame-Retardant Fabrics: No added FR chemicals. 
  • Designed for Comfort: Kids can enjoy every ride thanks to the contoured seat with breathable foam and soft padding. Plus, the large, padded armrests provide that extra boost of comfort.  
  • 2 Dishwasher-Safe Cup Holders: Keep drinks and snacks within reach; easy to remove for cleaning between rides.   
  • Padded Carry Handle Cover: Helps ensure a comfortable grip.    
  • Color-Coded Belt Guides: Help kids learn how to buckle up safely.    
  • Shoulder Belt Guide: Helps keep the shoulder belt in the correct position, encouraging proper fitment as your big kid continues to grow. 
  • Soft & Smooth Knit Fabric: For comfort and a sleek appearance.  

Dimensions & Weight

  • Dimensions: 9"H x 15.5"D x 17.1"W
  • Product weight: 3.1 lbs.
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: 57276726648

Discover Niche Categories That Outsell britax marathon convert to booster

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 6 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
G
Gregorio
Omaha, US
★★★★★ 5
Comprar la correa
Color: Gold, Color: Gold
Me compré este reloj mido commander pero se me quebró la correa metálica dorada donde la puedo comprar se quebró donde va el perno de la tapa gracias por su información
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 17, 2025
S
Stole
Fort Morgan, US
★★★★★ 5
Piece of art
Color: Anthracite
Excellent watch. Movement is Swiss not Japanese as stated. Minimalistic design, officially certified chronometer, good everyday runner for any occasion. Warmly recommended buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2021
F
Verified Purchase
Fabio Arenas Parra
Dallas, US
★★★★★ 5
AAA
Color: Anthracite
Calidad insuperable, 10/10
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2023
K
Verified Purchase
Kyle G
Carnegie, US
★★★★★ 5
Great, comfortable jeans.
Special Size: Low Stretch, Size: 34W x 30L, Color: Dark Midnight Wash
Great jeans! They're relaxed, but not loose or super baggy, so they still look great. I got the dark wash and you can wear them as dressy jeans or just casual out and about. I have bigger thighs and the 34x30 fits perfectly with room still to spare and not constricting at all. Whether it's walking around a lot, or sitting down for hours, it's very comfortable. We'll see how long they last but I washed them once already and are holding up. The length is good as well. When I don't have shoes I probably need a belt or could've ordered 29 length, but they're fine when I have shoes on. They don't slip down at all. Especially for the price compared to Levi's or others that cost 40, 50, or even $60 this is a great deal.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 12, 2025
C
Verified Purchase
Christopher Burwell
Carnegie, US
★★★★★ 5
If you’re on the fence read this
Special Size: Low Stretch, Size: 40W x 30L, Color: Iced Light Wash, Special Size: Low Stretch, Size: 40W x 30L, Color: Iced Light Wash
In all honesty, I was skeptical about ordering jeans from Amazon. I’ve always bought my jeans in stores, but I figured I’d give it a shot. I ordered these jeans for an upcoming outdoor wedding because I wanted something lighter and thinner. They showed up today, and I threw them on. They fit great, feel good and comfortable, and they don’t look cheap. I’ll mainly be using these for outings, so I can’t really attest to the durability as far as working in them, but I’d still suggest them. For reference, I’m 5’8” and 230 lbs with a husky build—kind of fit, kind of fat.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026

recommand products