Greenland Zip II black winter snow boots, sturdy, heavy-duty, comfortable and rugged. Waterproof and insulated for cold weather down to -40 degrees. Nubuck leather, suede, and TPR upper, genuine shearling collar. DriLex fleece lining for extra warmth and moisture-absorption. Compression-molded EVA midsole cushions every step. Firm arch and softer pads under forefoot and heel. WinterGrip outsole studded with temperature-sensitive IcePick lugs for goat-like traction on icy terrain. Similar to Mens' Chillak boots. AWMS S78 TC3W 632207 07-113