The KeyFit® 35 Base from Chicco 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 LockSure® steel-reinforced belt system helps achieve a secure fit with the vehicle belt.