Awards * Base for #1 Rated Car Seat in America The KeyFit & KeyFit 30 Infant Car Seat Base features an innovative LATCH management system, easy belt routing and a spring-loaded leveling foot to make installation easy. The "one-pull", centrally located tightening strap has made securing the LATCH attachment simple. The KeyFit & KeyFit 30 base has wide belt routing loops with a built in belt locking system for vehicles without LATCH. Leveling the base is easy with a spring-loaded leveling foot and easy to read liquid, bubble level guides on both sides of the base. The enclosed underside of base protects vehicle seats from damage. Conforms to the NEW FMVSS 213. Usage: Fits only KeyFit (4-22 lbs.) and KeyFit 30 (4-30 lbs.) infant car seats.