The Graco 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 (22-65 lb) to highback booster (40-100 lb*) to backless booster (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. *To continue to meet industry 2 easy-to-clean cup holders keep your child's drinks and snacks close at hand; Open-loop belt guides help properly position your vehicle's seat belt; Seat pad, body support, and harness covers are comfortable and machine washable; Graco ProtectPlus Engineered: a combination of the most rigorous crash tests that helps to protect your little one in frontal, side, rear & rollover crashes; Meets or exceeds the child restraint criteria for a frontal crash test under the US FMVSS 213; Side-impact tested for occupant retention solely with the built-in 5-point harness system; Rear-impact tested based on the European Rear-Impact Crash Pulse; Tested to Graco's RollSafe testing standard based on the European rollover testing procedure; Be sure to check your local and state laws, as well as AAP and NHTSA recommendations, for car seat usage; Recommended Use Forward-Facing Harness: 22-65 lb, up to 49"; Highback Booster: 40-100 lb, 43-57", at least 4 years old; Backless Booster: 40-100 lb, 43-57", at least 4 years oldSTOP using this child restraint and throw it away 7 years after the date of manufacture. When forward-facing, children should use the built-in harness system for as long as possible until they reach the maximum forward-facing weight or height for their car seat. At that point, children should ride in a belt-positioning booster seat. A booster is no longer needed once the vehicle seat belt fits properly, typically when they reach 4 feet 9 inches tall and are between ages 8-12. Be sure to check your local and state laws, as well as AAP and NHTSA recommendations, for car seat usage.* *Graco Supports the American Academy of Pediatrics and National Highway Traffic Safety Administration's Car Seat Guidelines. Visit our safety page for information on car seat usage recommendations.