The CYBEX Aton G Swivel Base is for use with the CYBEX Aton G Swivel and Aton G Infant Car Seats. An additional base provides on-the-go convenience for multi-car families. Easy to install and featuring an innovative 180 degree swivel, the Aton G Swivel base delivers thoughtful functionality and superior ease for loading and unloading your child. Features: -180-DEGREE SWIVEL: The 180-degree swivel base provides an ergonomic swivel that makes it easier than ever to load and unload the child from the carrier while the seat is installed in the vehicle -ANTI-REBOUND BAR: Offering the highest level of advanced safety in the event of a crash, an integrated anti-rebound bar reduces rotation and overall movement of the car seat during a crash, which ultimately reduces crash forces to the child. -EASY INSTALL: The SafeLockTM Belt Tensioner offers quick, simple and secure installation. -EASY GLIDE RECLINE: In base recline allows you to adjust recline angle for proper fit in the car without having to re-install the base -COMPATIBLE with Aton G Swivel and Aton G Infant Car Seat carriers. (sold separately)