Men's UGG Butte Waterproof Winter Boots 737872-5521-BLK Conquer winter with confidence in the Men's UGG Butte Waterproof Boots. Cold-weather rated to -20C (-4˚F), these boots feature waterproof construction, warming insulation, and Vibram® outsoles for unbeatable traction in freezing temps. Crafted from waterproof full-grain leather and lined with soft poly knit fabric and UGGpure™ wool, they seamlessly blend rugged durability with cozy comfort. Elevate your winter style and stay warm in the mountains or the city with the Men's UGG Butte Boots. Features 8mm fluffy poly knit fabric lining on vamp, 8mm fluffy poly knit fabric lining on quarter, 17mm UGGpure™ upcycled wool lining 7mm UGGpure™ upcycled wool insole or 7mm curly UGGplush™ 60% upcycled wool, 40% lyocell insole EVA footbed Waterproof membrane bootie construction EVA midsole Waterproof leather Vibram® outsole Gusseted tongue with water-repellent coating Cold-weather rated to -20˚C Cuffable shaft Men's UGG Butte Waterproof Winter Boots