The knee warmer is a special product from Thermopad and unique on the warmth market. Finally warm knees, no matter how cold it is outside. A stretch band with Velcro fastener holds the warmer in the desired position – without restricting mobility. Warmth that does you good. Four large warming chambers provide constant, soothing warmth directly on the knee. Up to 8 hours of warmth prevent chilling, even during long periods in the cold air. Also ideal for the stadium or hunting.