135700RED41 Features: Tread over unstable scree with the Vibram Mulaz crampon-compatible soles fitted out with Climbing Zone platforms to just in case your overland adventures turn vertical Get front-pointing crampon support while remaining flexible from side to side for French flat-footing on packed snow or slush with the supportive 3D Flex ankle-hinge system Keep your feet dry in waterproof Cordura uppers with antiacqua coated Lorica reinforcements over a waterproof GORE-TEX lining Protect your feet and toes from rough brushes with rocks with the high rubber rand and sturdy nylon shank Wear these boots for thousands of miles to the 7 mm Trailflex dual-density Micropore midsole keeps feet happy with footfall-cushioning stability Specifications: Weight per pair: 3 lb 4 oz Upper: nylon Midsole: dual density micropore Outsole: Vibram Mulaz Shank: nylon