(February 1, 2024) Forty-seven out of 54 booster seats introduced last year earn the Insurance Institute for Highway Safety’s highest rating of BEST BET. The BEST BET rating means a booster provides good seat belt fit for typical 4- to 8-year-olds in almost any car, minivan or SUV. Boosters that are rated GOOD BETs provide acceptable belt fit in almost any vehicle, while those rated Check Fit could work for some children in some vehicles. Seats designated “Not Recommended” don’t provide good belt fit and should be avoided.