NWOT Men's UGG Cuffable Butte Boot 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 leather and suede lined with soft sherpa, adding our innovative UGGpure™ wool for all-day wearability in the mountains or the city. Features: Waterproof Waterproof membrane bootie construction Waterproof leather Waterproof suede Cuffable shaft 8mm sherpa lining on vamp, 8mm sherpa lining on quarter, 17mm UGGpure™ upcycled wool lining 7mm UGGpure™ upcycled wool insole EVA footbed EVA midsole Molded rubber outsole, Vibram® outsole