Safety, Simplicity and Mobility - Doona Latch Base allows you to have them all. The Doona Latch Base is compatible with the Doona Infant Car Seat and is intended for rear-facing use only. It ensures correct installation every time. The Doona Latch Base has been designed, tested and certified according to US safety standards and regulations. The Doona Latch Base has a height adjustment mechanism and easy-to-read level indicators, ensuring proper seat angle and positioning. It can be installed in the vehicle either with the Latch system or with the vehicle’s installed seatbelt. Its secure click-in and easy click-out mechanism provides effortless mobility for busy parents on-the-go and the installation indication confirms that Doona is safely locked into the proper position at all times. Note - this car seat base is designed for Doona Car Seats only. It is not compatible with other car seat brands. Please be sure to read base instructions in their entirety before installing the Doona car base in your vehicle.