The Britax One4Life Slim ClickTight All-in-One Car Seat takes your child from birth to big kid. It features an extended rear-facing capacity of up to 50 lbs, easily converting to a forward-facing toddler seat (up to 65 lbs) and a high-back belt-positioning booster seat (up to 120 lbs) The 17.5” design helps you save backseat space, and ClickTight helps you install with confidence. This slim car seat is easy to clean, and the cover is safe to machine wash and dry with no added FR chemicals.