The Combi Kobuk booster is designed with vented shell, allowing air to circulate and keeping your child cool and comfortable. Deep side walls provide Tru-Safe Side Impact Protection to the head, neck and torso. The head restraint can be easily adjusted for a more comfortable fit and enhanced safety. Integrated belt guides allow for vertical and horizontal positioning of the vehicle seat belt for a customized fit. A padded, washable cover and removable cup holder provide comfort and convenience. The removable backrest allows the Kobuk to easily convert into a backless booster. The Kobuk accommodates children at least 3 years old, 33-125 pounds and 33-57 inches.