This moc with waterproof suede uppers, fleece lining, and Vibram? Arctic Grip sole technology is perfect for low-maintenance winter comfort.FEATURES? Vibram? Arctic Grip? outsole provides unparalled traction on wet ice even in the most extreme winter conditions? Waterproof pig suede leather upper? Conductor? fleece lining for added warmth? Merrell M Select? FIT.ECO blended EVA contoured footbed with organic odor control? Molded nylon arch shank? Merrell air cushion in the heel absorbs shock and adds stability? Compression molded EVA footframe provides cushioning? 3.0mm lug depth