Understated Winter Style.The men’s BUTTE Boot is a classic, understated style crafted to withstand harsh winters with stay-dry technology. This cuffable boot features a waterproof full-grain leather upper with durable ballistic nylon inserts. A waterproof/breathable eVent membrane and moisture-wicking sheepskin lining offer the ultimate combination of warmth and stay-dry comfort. The rugged Vibram outsole features a repeating-lug pattern, ensuring maximum grip on packed snow thanks to a TC1 compound. Inside, a sheepskin insole sock offers cozy underfoot comfort. Real ethical fur/sheep shearling lines the boot, providing warmth in temperatures to -20C. Patent leather upper Ballistic nylon inserts eVent waterproof membrane Sheepskin insole sock Traction Vibram outsoles Repeating outsole lug pattern Real ethical fur/sheep 7.5” shaft, 1.