Graco's Tranzitions 3-in-1 harness booster is designed to grow with your child and go with you, wherever your journeys take you - from car to carpool and beyond. This lightweight car seat transitions seamlessly from harness booster (22 - 65lb) to high back booster (30 - 100lb) to backless booster (40 - 100lb) and features the Simply Safe Adjust Harness System, which adjusts your harness and headrest to 8 height positions, with no rethreading. It features two removable cup holders to keep your child happy, and a machine washable seat pad, body insert and harness covers.