The NX 12 GripWalk(R) binding is a lightweight user-friendly all-mountain binding. A Full Action toe piece and lightweight NX heel deliver instant boot-to-ski power transfer and fluid shock absorption with an easy step-in design. The binding's overall lightweight construction makes skiing and carrying skis easier. It's compatible with adult ISO 5355 A and GripWalk(R) boot soles ISO 23223 A.