Running shoe technology meets winter performance in the X Ultra Mid 2 Spikes GTX, with a supportive, cushioned midsole, precise fit and full Gore-Tex bootie. It also has nine carbide tipped spikes in the sole for sure grip on icy surfaces. Carbide tipped spikes inserted into the sole lugs ensure aggressive grip, even on ice. Full Gore-Tex bootie ensures breathable waterproof performance. Sensifit and quicklace ensure precise, comfortable wrapping for any foot shape. Details: Non-marking winter Contagrip outsole, advanced Chassis, injected EVA midsole, molded shank, EVA shaped footbed, Gore-Tex performance comfort footwear membrane, waterproof bootie construction, water resistant textile and waterproof PU coated leather upper, mud guard, protective heel cap, protective rubber toe cap, heel strap, gusseted tongue. Material: Leather, Rubber, Foam, Textile.