Designed with your growing child's comfort and safety in mind, the Graco TurboBooster 2.0 is a highback car seat that seamlessly converts into a backless booster as your child grows. Suitable for big kids aged 4-10 years old, weighing 40-100 lbs and up to 57 inches tall, it features height- adjustable armrests and head support as well as hide-away cup holders for convenience. This Graco car seat is engineered with top-notch safety measures and has been rigorously crash tested under extreme interior car temperatures and based on the New Car Assessment Program.