A clever progressive booster seat with height adjustable legs can be raised 4 or 8cm that are ideal for growing children wide spread fully retractable feet for optimal stability can be used flat on most chairs equipped with a removable safety belt compact and portable it folds up to fit easily in a car easy to assemble with no screws necessary dimensions lxwxh 38x36x485cm folded height 21cm weight 13 kg suitable from 18 months to 3 years complies with current safety standar