From the makers of the # 1-rated KeyFit, the IIHS Best Bet KidFit Booster is designed with 10 positions of DuoZone side-impact protection for the way kids grow. With height adjustment from the waist, instead of at the neck, KidFit offers both head and shoulder protection throughout every stage. KidFit is equipped with premium UAS connectors and a SuperCinch 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 integrated side wings are lined with EPS energy-absorbing foam for improved impact protection.