The Cybex Aton G2 infant car seat is conveniently lightweightbut its 9-lb. frame doesn't come at the expense of protection. The car seat's load leg base extends to the vehicle floor to reduce crash forces by up to 30%, while built-in linear side-impact protection absorbs what comes from the sides. The SafeLock belt tensioner locks the base in place securely every time, and SensorSafe sends real-time alerts to your phone if the buckle loosens, temperatures spike, or your baby is accidentally left behind. The no-rethread harness and headrest adjust together as your baby grows. Best of all, the whole seat snaps onto any Cybex stroller in seconds.