Pro S2 is our new Atomic Pro boot for skiers who love getting out on the tracks whenever they can. It offers a great combination of comfort, precision and natural movement thanks to new features all over the boot. One is the 3D Lacing System: the heel and lacing system are connected so as they tighten they wrap the foot perfectly for optimum heel hold. The other big feature is the Split Cuff with 3600 Closing that allows your ankle to move naturally while staying supported. For extra comfort the S2 has an Aero Vent on the ankle made from breathable mesh to keep your feet cool and dry.