Ride with peace of mind with the Britax Willow™ S Infant Car Seat. This rear facing car seat includes the Alpine travel car seat base for added convenience. First ride jitters? Gone. The Willow S is a rear facing car seat with ClickTight® technology so you know it can be installed securely on the first ride and beyond. This 5 point harness car seat features a RightSize™ system that provides adjustment points at the hips, shoulders and between the legs.