The Britax Harness-to-Booster Seat grows with your child from toddler to big kid. With its patented ClickTight feature, there’s no stressing or struggling! The seat belt paths are open, clearing the way for quick & confident installation. The steel tensioner automatically tightens the seat into your vehicle, taking care of the hard work for you. With specialized features, the car seat is made with a SafeWash® cover and extra padding for a comfortable ride.