The Ahnu Sugar Peak Insulated Waterproof Boot is for the cold-weather adventure seekers that need warmth, comfort and style. Tthese insulated lace ups feature a winterized Vibram rubber outsole and innovative Ahnu Numentum Hike technology to keep your feet extra stable on rugged, slippery surfaces. Waterproof Leather uppers Textile knit details Waterproof membrane 200g Thinsulate insulation Aegis Antimicrobial Tech Numentum Hike unit Custom Vibram IceTrek outsole Weight 1/2 Pair, Size 7: 12.5 oz