The Graco Tranzitions 3-in-1 Harness Booster Car Seat 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 10-30 kg (22-65 lb) to highback booster 18-45 kg (40-100 lb) to backless booster 18-45 kg (40-100 lb) 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.