Safety, Simplicity, and Mobility. The Doona X LATCH Base ensures secure installation every time. Designed for safety and ease of use, it features a height-adjustable support leg, built-in leveling system, and color indicators to help confirm correct installation. Its click-in/click-out system allows for smooth transitions in and out of the vehicle, making it ideal for parents on the go. Features: LATCH system for secure anchorage One-click installation Click-in/click-out mechanism Height-adjustable support leg Integrated leveling system Color indicators for correct installation Easy release for quick removal Rear-facing use only Compliant with US regulations (FMVSS213B) Specifications: Product dimensions (WxLxH): 14.7 x 25.75 x 8.7 in 37.3 x 65.4 x 22.4 cm Product weight: 17.2 lbs / 7.8 kg Suitability: Compatible with the Doona X Car Seat. Intended for Rear-Facing use only. Group: 0+ Infant weight: 4-35 lbs / 1.8-15.8 kg Infant height: up to 32 in / 81.3 cm