Any child is sure to feel great riding around in the backless TurboBooster youth booster seat. This backless version has padded, height-adjustable arm rests and hide-away cup holders on either side of the seat – perfect for storing drinks, snacks, and toys for those long rides. The backless TurboBooster youth booster seat is for children from 4 to 10 years old, from 40 lbs to 100 lbs and between 40 and 57 inches tall.