Cosco Kids Topside Backless Booster Seat

Our score 9.76 / 10

Research by Peter Crona Last updated Method How we research

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From 18 kg/39.7 lb, up to 54 kg/119 lb (~4 to 10 years).

Cosco Kids Topside Backless Booster Seat

Pros

  • Simple backless shell works as a lightweight spare-seat booster
  • Low-bulk design is easy for school pickups and occasional cars

Cons

  • No high-back or harness support for younger booster riders
  • Basic setup leaves belt fit and vehicle head support entirely to the car and child
Seat Use
Booster
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Cosco Kids Topside is the no-frills backless booster to consider when you need a light spare for an older child, not a primary seat for a newly booster-ready rider. It solves the practical problem of pickups, carpools, and relatives’ cars where a bulky high-back booster is inconvenient. The tradeoff is support: there is no harness, no shoulder-belt guide above the child, and no headrest. Check belt fit in each vehicle and make sure the child will not slouch under the shoulder belt.