Ideal for the next time you take on steep, rugged trails, the Karrimor Alpiniste Mountain Boot delivers top-notch traction on a range of surfaces with a Vibram outsole and gives you the option to use B2 and B1 crampons for extra grip on icy surfaces. A Weathertite waterproof suede upper with Cordura panels further gives you all-around durability, all while blocking out the elements. NOTE: This product is sold in U.S. sizes. While the physical product may display both the U.S. & U.K. sizes on it, please place your order using the U.S. size. Shoes run smaller, order 0.5 size up for an accurate fit. Lace-up closure. Padded ankle collar . Ball-bearing eyelets. Weathertite Extreme WTX upper. Cordura panels . EVA micro-porous midsole . B1 and B2 crampon compatible . TPU heel . Vibram outsole . Upper: Textile Leather . Inner lining: Textile. Outsole: Synthetic. Imported.