Big winter protection gets a new level of fit and performance with X Ultra Winter CS. Combining a light, supportive Advanced Chassis midsole with full waterproof protection and Thinsulate, it keeps feet warm and dry as the aggressive outsole delivers total confidence for charging through wet, snowy and icy conditions. Details: Full waterproof bootie construction, light Thinsulate insulation for winter comfort, ice grip compound and aggressive lug design, non-marking winter Contagrip outsole, injected EVA midsole, molded shank, EVA shaped footbed, OrthoLite sockliner, waterproof nubuck leather upper, mud guard, protective rubber heel cap, protective rubber toe cap, heel strap, lace locker, gusseted tongue. Material: Leather, Rubber.