The Kamik® Griffon boot is versatile and protective, keeping you going through the work day and on into the evening. Waterproof Buffalo leather upper.Seam-sealed waterproof construction keeps out the wet elements for a dry foot environment. Fixed 200B 3M™ Thinsulate™ insulation provides protective warmth against the cold. Moisture-wicking boa lining for excellent breathability. Padded collar and waterproof gusset tongue. Traditional lacing system with sturdy rustproof metal eyelets. Removable Kamik comfort EVA footbed offers both comfort and support.GENESIS synthetic rubber winter outsole provides excellent traction. Temperature rating: -25°F/-32°C.