Designed for ultimate portability, Monterey 5iST FixSafe transforms in seconds from a compact fold to a full-size booster seat, without compromising safety or comfort. At 25percent smaller than the average booster, Monterey 5iST FixSafe folds down into a compact and convenient size and features an integrated carry handle and carry straps. So with Monterey 5iST FixSafe you can always take safety with you for the joy of the journey. Suitable from 40 - 120 lb / 18 - 54 kg (38 - 63in tall / 96 - 160cm).