The Safety 1st onBoard Insta-Latch Infant Car Seat Base with self-retracting one-click LATCH connectors makes installation quick and secure. The Safety 1st onBoard Insta-Latch Infant Car Seat Base also features SecureTech, Safety 1sts red-to-green indicators on the seats base that allow you to see when your base is secured from the LATCH or vehicle belt. The base height is also adjustable to get the right fit in your car. With an extra car seat base, you wont have to worry about transferring the base from car to car. It also comes in handy if your little one is riding with other family members or caregivers. This base is compatible with the Safety 1st onBoard Insta-Latch Infant Car Seat.