From the makers of the #1-rated KeyFit and Next Fit, the IIHS Best Bet Chicco Kid Fit Belt-Positioning Booster is designed with 10 positions of Duo Zone side-impact protection for the way kids grow. With height adjustment from the waist-instead of at the neck-the Kid Fit offers both head and shoulder protection throughout every stage. The Kid Fit is equipped with premium LATCH connectors and a Super Cinch one-pull tightener to stabilize the seat for easy in/out and keep it secured when unoccupied. Belt guides make it easy to position the vehicle seat belt and side wings are lined with EPS energy-absorbing foam for improved impact protection. A contoured Ergo Boost seat with double foam padding provides comfort and support in all the right places, and a 2-position backrest adjusts to mimic the vehicle seat position. The backrest is also removable to create a backless booster for older children. Two dishwasher-safe Cup Folders hide away when empty and are easy to remove for cleaning. All fabrics, including armrest covers, are removable and machine-washable. For big kids 4y+ from 30-100 lbs in High-Back Mode, 40-110 lbs in Backless Mode, and 38-57″.