The Diono Cambria Booster 2-in-1 Car Seat can be used as either a high back booster or a backless booster seat for older children. The seat is designed to be safe for children from 40lbs to 120lbs and can be used with children from 38 inches tall. The headrest on the seat has six different positions, while the seat itself includes multi-recline positions and plenty of hip, leg, and shoulder space so that your child is always comfortable. The car seat is lined with EPE energy absorbing foam side walls for additional protection. It is easy to fit and includes LATCH connection system. The car seat can be easily transformed into a backless booster when your child is ready.