Ugg men Butte snow boots Item No. 5521- Packed with technology, our cuffable Butte boot is cold-weather rated to -32˚C (or -25.6˚F) and features waterproof bootie construction, warming insulation, and innovative Vibram® outsoles designed to stay flexible in freezing temps. Rugged on the outside and cozy on the inside, it's made from waterproof full-grain leather and lined with soft sherpa, adding upcycled UGGpure™ wool for all-day wearability in the mountains or the city. Waterproof Waterproof membrane bootie construction Waterproof leather Gusseted tongue with water repellent coating Cuffable shaft 8mm sherpa lining on vamp, 8mm sherpa lining on quarter, 17mm UGGpure™ wool lining 7mm UGGpure™ wool insole EVA footbed EVA midsole Vibram® outsole 8.5" shaft height Cold-Weather rated to -32°C Heat-embossed UGG® logo, Woven label with UGG® logo