Super Rebound Compound midsole provides durable shock absorption to help reduce torque and allow for a smooth transition into the midfoot, Waterproof full grain leather and mesh upper with breathable mesh lining, Waterproof medial zipper for quick on and off, Bellows tongue keeps out debris, Metallic hardware, Mesh footbed cover and molded nylon arch shank, Cleansport NXT treated for natural odor control, COMFORTBASE removable contoured footbed cradles your foot in all day comfort, Merrell Air Cushion in the heel absorbs shock and adds stability, Vibram TC5+ rubber outsole provides exceptional traction,