Added Stability and Legroom for Every KeyFit Infant Car Seat The KeyFit 35 Base is engineered with the #1-rated innovative safety features that make it the easiest to install correctly, every time. The versatile stay-in-car base offers secure attachment for the top-rated KeyFit, KeyFit 30 and KeyFit 35 Infant Car Seats with an intuitive, click-in design and one-hand release. An integrated anti-rebound bar provides added stability and more legroom for extended rear-facing comfort. Simply, Accurately, Secure... Every Time The KeyFit 35 Base incorporates intuitive and top-rated installation features to help ensure a simple, accurate and secure install…every time. Premium LATCH connectors are easy to attach and remove from your vehicle, while the SuperCinch force-multiplying tightener helps achieve a secure fit to the vehicle seat using a fraction of the effort. One-hand ReclineSure spring-loaded leveling foot works in tandem with RideRight bubble levels to help verify and achieve proper car seat angle. The LockSurev steel-reinforced belt system helps achieve a secure fit with the vehicle belt. Versatile stay-in-car base accepts all KeyFit Infant Car Seats with intuitive, click-in design; Anti-rebound bar provides added stability and more legroom for every KeyFit Infant Car Seat; Top-rated installation features make it the easiest to install correctly; Premium LATCH connectors for easy attachment & removal; SuperCinch force-multiplying LATCH tightener; ReclineSure leveling foot and RideRight bubble levels; LockSure steel-reinforced seatbelt locking system; From the makers of the #1-rated KeyFit; Usage They KeyFit 35 Base is designed for use with all KeyFit Infant Car Seats, including KeyFit, KeyFit 30 and KeyFit 35. Care and Maintenance Sponge clean plastics using warm water and mild soap Specifications: Assembled Dimensions: 19" x 15" x 16" Assembled Weight: 8.6 lbs. Ship Weight:12.3 lbs. Carton Dimensions: 17.5" x 16" x 24.25".