Cybex Gold SafeLock Base for Aton MThe SafeLock Base works seamlessly with the Aton M car seat, offering a new anti rebound design and a height adjustable load leg, to provide extra stability and safety. An extra car seat base can be handy for families with multiple cars and or caregivers to help transition baby to and from the vehicle without the need to reinstall depending on who they are traveling with. Specifications Anti rebound design reduces car seat rebound movement by nearly