Added stability and legroom for every key Fit infant car seat The key Fit 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 Key Fit, key Fit 30 and key Fit 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, securely.Every time The key Fit 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 recline Sure spring-loaded leveling foot works in tandem with ride Right bubble levels to help verify and achieve proper car seat angle. The lock Sure steel-reinforced belt system helps achieve a secure fit with the vehicle belt.