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Cosco

Cosco Topside Backless Booster Car Seat, Lightweight Booster Seats for Cars 40-100 lbs, Backless Booster Seat for Car, Organic Waves

  • Based on 14,873 reviews
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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Aug 9
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Color: Organic Waves


Size: 1 Pack


Features

  • GIVE YOUR CHILD A LIFT: The booster seat for kids 40-100 lbs provides extra height to keep seatbelts properly positioned. The car seat booster is comfortable for children measuring 43.4"-57".
  • MADE FOR GROWING KIDS: Designed for children weighing 40-100 lbs and measuring 43.4"-57", this child booster seat for car is a versatile kids booster seat for children 40-100 lbs and measuring 43.4"-57".
  • LIGHTWEIGHT, COMPACT DESIGN: Our booster carseat is easy to move between vehicles, perfect for families needing a portable car booster seat. Ideal as a travel booster seat for convenient use on the go.
  • MAKE CAR RIDES MORE COMFORTABLE: This booster car seat features extra-plush padding, making for a happier ride. The fabric cover of the travel booster seat is hand-wash only.
  • SEAT FRIENDLY DESIGN: This car booster seat helps keep your vehicle seats unmarked.

Description

Give your child a comfy lift with the Cosco Kids™ Topside Booster, featuring an extra-plush pad. This kids booster car seat gives kids the extra height they need to keep seatbelts properly positioned. Super lightweight, it’s simple to move from car to car and offers a seat-friendly design that won’t scuff or leave indentations on your vehicle seats. Comfy and lightweight, the Topside Booster is great for families on the go. Designed for kids 40–100 lbs. and 43"–57". Whether you're traveling with your little one or simply running errands, this car booster seat provides a comfortable journey. Make every ride smoother and more enjoyable with the Topside kids booster seats for cars 40-100 lbs. and 43"–57". El asiento para niños de carro also features a hand- washable fabric cover, making it easy to keep clean.

Maximum Weight Recommendation: 100 Pounds


Maximum Height Recommended: 57 Inches


Installation Type: Seat Belt


Orientation: Forward Facing


Harness Type: 3-Point


Number of Height Positions: 1


Brand: Cosco


Age Range Description: Kid


UPC: 884392952150


Manufacturer: Dorel Juvenile Group


Part Number: BC030GZT


Model Number: BC030GZT


Item Type Name: Booster Car Seats


Unit Count: 1.0 Count


Item Dimensions D x W x H: 14"D x 15.5"W x 6.5"H


Material Type: Polypropylene


Color: Organic Waves


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 9

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • A Great Transition to a Big-Kid Seat
Color: Rainbow Size: 1 Pack
⭐⭐⭐⭐⭐ My grandson absolutely loves his new big-boy seat! One of the first things I noticed was how lightweight it is, which makes it easy to move between vehicles when needed. It also stores very easily in tight spaces when not in use, which is a huge plus. The design is simple but effective. The seatbelt fits securely underneath the armrests, helping keep the booster seat in place and providing added security for my grandson while riding. He finds it comfortable, and I appreciate the peace of mind knowing he’s riding safely. Overall, this is a great booster seat that is practical, easy to use, and comfortable for kids. I would definitely recommend it to other parents and grandparents looking for a reliable option. ... show more
Reviewed in the United States on June 8, 2026 by Lesley O’Connor
    • Perfect Booster Seat for Everyday and Long Trips
Color: Organic Waves Size: 1 Pack
We are really happy with this backless booster seat. From the start, it felt sturdy and well-made, which gave us peace of mind. Our child finds it very comfortable, even on longer car rides, and the design makes it so easy for them to buckle themselves in without help. That’s been a huge convenience for us as parents. We recently took it on a long road trip, and it proved itself even more. After hours in the car, our child stayed comfortable, and when we had a few spills and crumbs (as always happens with kids), it was surprisingly easy to clean. Everything wiped right off, and the seat looked good as new. The booster is lightweight enough to move between cars quickly but still feels solid once it’s in place. Overall, it’s safe, reliable, and parent-friendly, and our child genuinely likes it. I’d recommend it to anyone looking for a no-fuss, dependable booster seat for everyday use and longer trips alike. ... show more
Reviewed in the United States on September 8, 2025 by Daniela McLea
    • Perfect for temporary use and price is right
Color: Organic Waves Size: 1 Pack
Very portable for visiting family. Not very comfortable for long trips as little cushioning in the seat but perfect for sightseeing. Easy to transfer from one car to another. Straps in securely and keeps child secure.
Reviewed in the United States on May 8, 2026 by I did not receive this item.
    • Lightweight, Comfortable, and Perfect for Quick Car Swaps
Color: Grape Size: 1 Pack
This Cosco backless booster is exactly what you want when you need a simple, reliable booster seat that’s easy to move between cars. It’s lightweight, comfortable for kids, and does the job without taking up a ton of space. 🔹 Easy to Use & Travel-Friendly Super light and easy to carry, which makes it perfect for carpools, grandparents’ cars, or switching between vehicles. No complicated setup—just place it and buckle in. 🔹 Comfortable & Kid-Friendly The seat has enough padding to keep kids comfortable on longer rides, and the armrests help position the seatbelt properly. Plus, the color options are fun and look great. ✅ Pros: Very lightweight and easy to move between cars Simple setup with no hassle Comfortable padding for kids Great price for a dependable booster Doesn’t take up much space ❌ Cons: No back support (not ideal for kids who still need it) No LATCH system, so it can slide around when empty Overall: A great affordable booster seat that’s perfect for everyday use, travel, and quick car changes. If your child is ready for a backless booster, this is an excellent pick. ... show more
Reviewed in the United States on January 13, 2026 by Amazon Customer
    • Will buy this again when my next kiddo needs a booster
Color: Organic Waves Size: 1 Pack
Easy to use, lightweight. Seems to be durable, I love that it can fit in small spaces, feels safe as it checks off all our boxes. Just wish it had cup holders haha then it would be a 5 star!!
Reviewed in the United States on May 5, 2026 by Sandy
    • Cheap and Effective
Color: Leo Size: 1 Pack
Great for the price.
Reviewed in the United States on June 3, 2026 by Hidi Canole
    • Cosco booster seat
Color: Leo Size: 1 Pack
It’s perfect and works exactly as intended. The booster seat has a label on it explaining in how the seatbelt goes. Lightweight and compact. Fits in all my vehicles. Switching between cars is super fast now and the padding is adequate for a child.
Reviewed in the United States on June 21, 2026 by Donavon Miller
    • Good product!
Color: Rainbow Size: 1 Pack
I babysit my grandchildren. It was time to switch from a regular carseat to a booster. After reading some reviews I decided to purchase this one. It's a hit will my granddaughter. She likes the colors. She says it's comfortable. It seems to be made nicely. It doesn't take up a lot of room, so I can remove it easily when not in use. It was a great value. When it's time to replace the next one I will be ordering another one. ... show more
Reviewed in the United States on February 4, 2026 by M.H.

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