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Graco Transitions 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 (22 – 65 lbs) to highback booster (40 – 100 lbs) to backless booster seat (40 – 100 lbs) 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. Metal and plastic parts may be cleaned with mild soap and cool water.