Install with confidence, every time. ClickTight® installation is secure and struggle-free, whether using the vehicle seat belt or lower connectors. The ClickTight indicator helps provide a visual guide while installing the base.* Level indicators and spring-assist recline make it quick and easy to find the correct angle. ReboundReduce® stability bar helps minimize movement in a crash for peace of mind while you’re on the move. Alpine™ base is compatible with Britax® Willow™, Willow™ S, Willow SC, and Cypress™ infant car seats. *Indicator window may vary by model. Refer to user guide for specific instructions.