Cosco Kids
Cosco Topside Backless Booster Car Seat (Leo)
The Cosco Topside Backless Booster Car Seat (Leo) is a lightweight (3 lbs), narrow (approx. 15 inches) seatbelt-positioning booster for children 40–100 lbs and 43–57 inches tall. It features extra-plush padding, a hand-washable fabric cover, and a vehicle-friendly design to prevent seat marks, but lacks a built-in shoulder belt guide—the belt routes over the armrest. This booster is well-suited for travel, carpooling, and three-across installations in compact vehicles, though user reviews note that padding is minimal for longer trips.
- Style
- lightweight, travel-friendly
- Category
- Baby & Toddler > Baby Transport > Baby & Toddler Car Seats
- GTIN
884392570415- MPN
COSCO-884392570415-818280932665-GENTLYUSED
Specifications
Lightweight booster car seat with an extra-plush pad that lifts children to properly position seatbelts; designed for kids 40–100 lbs (43.4"–57"). Seat pad is machine-washable and dryer-safe.
Designed for kids 40–100 lbs and 43.4"–57"; extra-plush pad for added comfort; keeps seatbelts properly positioned; seat-friendly design protects vehicle seats from scuffs and indentations; lightweight, compact design for easy transfer between vehicles; machine-washable and dryer-safe seat pad; fabric cover is hand-wash only; one-year limited warranty.
- Style
- lightweight, travel-friendly
- Occasion
- travel, everyday
- Gender
- unisex
- Age Group
- kids
- Condition
- used
- Weight
- 3 lb
- Category
- Baby & Toddler > Baby Transport > Baby & Toddler Car Seats
Additional Attributes
- Extra-plush pad
- Gives kids extra height to keep seatbelts properly positioned
- Lightweight and compact design, easy to move from car to car
- Seat-friendly design that won’t scuff or leave indentations on car seats
- Seat pad is machine-washable and dryer-safe
- Fabric cover is hand-wash only
- Designed for kids 40–100 lbs and 43.4"–57"
- One-year limited warranty included
- Great for families on the go
Image Analysis
1 images- 01high
Top-down view of a two-tone padded booster seat with raised armrests and a visible COSCO logo, placed on a tiled floor.
OCR: COSCOFlat layupholstered padded seating surfaceraised padded armrestscontoured seat wellstitched seam linesembroidered COSCO logo on front centertwo-tone constructiontextured plastic base
Brand PDP Lookup
- Brand
- Cosco
Cosco Kids Topside Booster Car Seat
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Documents & Data
Customer Reviews
37 total37 reviews · out of 5
Quick and easy
Couldn’t believe how simple the process was.
Good experience
Item arrived just as described. Couldn’t be happier.
Everything was great
Fast shipping, clear product info, no surprises.
Worth it
Got a like-new monitor for under $50.
The best prices going and shipping is…
The best prices going and shipping is fast.
Just like described
Item matched the listing perfectly.
I purchased a glider
I purchased a glider. It was described accurately, shipping was fast and price was great!
Perfect
Everything arrived exactly as expected.
Smooth purchase
Smooth from checkout to delivery.
Kidsy Customer Service Review
Kidsy had a great selection of deeply discounted baby gates. Unfortunately, there was a piece missing when I received my package. I didn't realize it until after the 14 day return/exchange window. But I reached out, and they were willing to send me the piece anyway at no extra charge. I really appreciated the customer service.
Bouncer worked fine
Bouncer worked fine. Was a little worried when it showed up but it was perfectly fine!
Great, trustworthy experience
Great deals, easy checkout with lots of payment options, shipped very quickly, and everything was packed well and looked exactly as it was described! I didn't end up needing any intervention with my shipping experience but appreciate the option to cover lost packages for a minimal fee, especially as we get into the late and lost package holiday season. I'll definitely be getting more of my baby gear from Kidsy.
Easy process
Super easy to order. Arrived on time and in great shape!
Exactly what I needed
Found the exact baby item I needed for half the cost.
Great for parents
Shopping for gear doesn’t have to break the bank.
Highly recommend
A friend told me about Kidsy and I’ve already ordered twice.
Thank you!
Thank you! Great prices and great items.
Love my stroller
Love my stroller. Great deal and great service.
Holly
Stocked my home for visits from the grandkids.
I appreciated the detailed description
I appreciated the detailed description, I knew I was getting a floor model and it came in perfect shape at a much reduced cost. When I thought the cupholders weren't included, I reached out to them and then we found them and they were very responsive and thankful that I let them know. Everything is fine.
Quick response
Ordered a gate prior to this one, UPS lost it on route. I reached out to Kidsy via email and they secured a refund from UPS. Was hesitant to order again, but I couldn't find the gate at a more reasonable price. 2nd order arrived with no issues. Gate is sturdy and the dog (Husky) hasn't gotten through it (he's an escape artist). Quick delivery from start to finish.
Looks unused
Couldn’t even tell the stroller had been returned.
Kidsy had exactly the baby/pet gates we…
Kidsy had exactly the baby/pet gates we needed...good price...good shipping...good items. If you have children or know someone who has children...this site is a keeper! They get 10 stars!!
So easy to use
Website is easy to use, items are great quality, and shipping is fast.
Amazing value
Saved a ton on a big item. Thank you, Kidsy!
So grateful
Found what I needed at a price I could afford.
Was just as described
Was just as described. Quick shipping and communication.
Better than marketplace
Safer and easier than buying used on Facebook.
Great deal
Got a travel system for a great price. Would recommend Kidsy.
Stroller came super fast and I love it
Stroller came super fast and I love it
Great product
I was impressed with the shipping and the item I got looked brand new. Great product and I’ll be ordering again.
Quick delivery and items in great…
Quick delivery and items in great condition!
less money less hassle
Found an item still in its original packaging for 2/3 of the original pricing.
Great deals, easy to use site
Great deals, easy to use site
Looks like new
Couldn’t believe how good the condition was.
Would buy again
Everything was smooth and the item was as described.
Fast and efficient
Got my item fast and it was in excellent shape.
Better than expected
Everything came packaged well, looked brand new. Super impressed.
Would recommend
Already told two friends about Kidsy.
Item was like new
Bought a swing and it looked untouched. So happy.
Fast delivery
Order arrived in 2 days and looked perfect.
Great price and fast delivery.
Great price and fast delivery.
Love Kidsy!
I’ve ordered a few items from Kidsy now and all have been great.
Good prices and fast shipping
Good prices and fast shipping
Good stuff
Love the gear I got for my twins.
Very happy
Really happy with my order. Shipped fast and clean.
Was pleased with the car seat I bought…
Was pleased with the car seat I bought from Kidsy. It was in the condition they described and arrived quickly. Thank you!
My item shipped very quickly and I…
My item shipped very quickly and I received it about 3 days after I ordered it! It came in an extra protected box as well! Very pleased with my purchase!
Great service
I’m so happy with my experience. Kidsy shipped my order quickly and it was in great condition.
The products were very good
The products were very good. More than I’d expected them to be. The color of the diaper bag is beautiful and I know my daughter in love will be happy with it.
Reddit Insights
4 threads · r/CPST, r/beyondthebump, r/PreschoolersReddit users generally recommend the Cosco Topside as an affordable, lightweight backless booster that fits three-across, but note it lacks belt guides and padding, and proper belt fit can be tricky.
Overall sentiment is mixed to slightly positive. Users appreciate the low price and narrow width, but express concerns about comfort, lack of belt guide, and unique belt routing.
Themes
Use Cases
- Travel booster or spare seat for carpooling/grandparents
- Three-across seating in compact vehicles
- Booster for older/larger children (5+) ready for backless
Watch Out For
Community Q&A
- Does the Cosco Topside come with a shoulder belt positioning clip?
- No, it does not include a belt guide; the shoulder belt routes over the armrest instead of under.
- Is the Cosco Topside comfortable for long trips?
- It has a plush pad but minimal padding; some kids find it comfortable for short trips but less so for long drives.
- Can the Cosco Topside fit three across in a back seat?
- Yes, its narrow 15-inch width makes it ideal for three-across installations.
Compared To
vs Evenflo Amp
The Cosco Topside is similarly affordable and narrow, but the Amp may have slightly better padding; both lack a belt guide.
vs Graco TurboBooster
The TurboBooster has a highback option and built-in belt guide, which may provide better fit for smaller children, but is bulkier than Topside.
Source Threads
Booster recommendation request highlights Topside's narrow width and belt routing quirks
A CPST recommends the Cosco Topside for narrow three-across situations, noting it lacks a belt guide and that the shoulder belt must go over the armrest. OP’s child fits well at 6 years, 45 lbs, but commenters warn about belt fit on smaller kids and suggest trying in-vehicle first.
u/Ok_Blueberry_2733r/CPSTView thread →
Help choosing booster seat includes mention of Cosco Topside as option for older child
A user asking for booster recs for a 7-year-old gets suggestions including the Cosco Topside. A CPST notes the Topside's lack of belt guide and unique routing, emphasizing the child must be mature enough to sit properly. Another commenter mentions Graco TurboBooster as alternative with better belt fit for smaller kids.
u/Traditional-Pea-2823r/CPSTView thread →
Looking for real reviews for cheap Evenflo/Cosco boosters reveals mixed comfort feedback
A parent seeking cheap booster reviews gets firsthand accounts: one user says their kids find the Cosco Topside comfortable due to the plush pad, while another says it’s minimal and their child complains on long trips. General consensus is that it’s a good spare/travel seat but not plush for daily use. Evenflo Amp is mentioned as a comparable alternative.
u/momandmorer/beyondthebumpView thread →
Comfy booster seats discussion confirms Topside's practicality for three-across but notes padding shortage
In a thread about comfortable boosters, a user recommends the Cosco Topside for three-across with two other seats, but acknowledges the padding is just a basic pad, not plush. Other users stress belt fit over padding and suggest trying before buying due to belt routing without a clip. Price and narrowness are seen as major pros.
u/ittybittytiddypodr/PreschoolersView thread →