Facts and Benefits Durable full-grain Yak leather upper GORE-TEX Technology ensures a breathable, 100% waterproof shoe FLUIDFORM™ Technologyand foot-fitted last provide anatomical support and an integral, durable bond between the upper and sole, without the compromises common with stitched and/or glued assemblies. Built on an anatomical last that follows the natural shape of the foot, for enhanced support and stability A soft, flexible midsole is combined with the innovative SHOCK THRU point for shock absorption Rubber outsole for durability and grip in all terrains