The Atomic Live Fit 100 Mens Ski Boots gives an instant wide fit. It continuously adapts as time goes on. It also features 3M Thinsulate Insulation to keep your feet warm when it's well below zero. And without sacrificing foothold, it's super easy to get this boot on and off, taking the strain out of the beginning and end of your day. Features: PE Cuff / PU Shell, Silver liner with 3M Thinsulate, 35 mm Velcro strap, 6000-Series alu buckle.