The Aton builds on CYBEX safety technologies to offer great protection with unique safety features. The Aton Linear Side Impact Protection (L.S.P.) system uses a flexible shell that absorbs energy as well as foam protection. The shell and foam work in tandem gradually absorb crash forces and distribute them away from the baby, especially during side-impact collisions. Approved for air travel. Secure European installation without the base uses a unique shoulder belt routing behind the carrier that makes this installation method as safe as using the base with Load Leg. Makes travel in taxis and on vacation safe and simple. Installing the base with the Belt Tensioning Plate makes a secure installation easy to achieve.