The Graco Wayz 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 (22-65 lb) to highback booster (40-100 lb*) to backless booster (40-100 lb) and features the Simply Safe Adjust(TM) 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. *To continue to meet industry standards, we have increased the weight minimum from 30 to 40 lb