The North Face Men's Chilkat IV Winter Boots feature Heatseeker™ insulation for uncompromised warmth, and temperature-sensitive lugs for exceptional grip. These boots are made with a waterproof, leather upper and an anatomically engineered, injection molded, waterproof TPR that not only guarantee that your feet will be dry at all times, but also super comfortable. To ensure that comfort is also as cozy as possible, TNF has added an ample (200 g) Heatseeker™ insulation to lock in heat and temperature-sensitive soles for extra grip in any conditions. Winter conditions can be tough. Luckily the Chilkat IV boot is tougher.