Snow Plow full grain waterproof and salt resistant leather upper - Conductor fleece lining for added warmth - Kinetic Fit Base removable contoured insole for flexible support - Molded nylon arch shank - Merrell air cushion in the heel absorbs shock and adds stability - Compression molded EVA footframe provides cushioning - Vibram Arctic Grip outsole provides unparalleled traction on ice even in the most extreme winter conditions - 3.0mm lug depth