The Graco Tranzitions® 3-in-1 Harness Booster 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 booster seat transitions seamlessly from harness booster (9.9-29.5 kg)(22–65 lb) to high back booster (13.6-45.3 kg)(30-100 lb) to backless booster (18.1-45.3 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.