The Evenflo Gold Revolve360 Extend car seat is a game changer for growing kids. This convertible seat offers rear-facing use up to 50lb. for added protection and rotates 360 degrees for easy in-and-out access. With SensorSafe technology, you get real-time safety alerts for peace of mind. Installation is quick and secure, thanks to Sure360, LockStrong, and Tether360 systems. | Evenflo Gold Revolve360 Extend 3-in-1 Convertible High-back Booster Car Seat - Onyx