The Batteries make the difference. Put on a pair of MPI Outdoor HEAT SOX , before you put on your boots, and they will provide safe heat to keep you warm and comfortable. You can control warmth from Low to High. *Batteries not included.
THE HEAT in HEAT SOX: The heating element of HEAT SOX is located within an enclosed area in the bottom of the toe area of the sock. The heating element is padded and protected and will keep your toes and feet warm, (NOTE: NOT HOT – BUT WARM) without any discomfort. The wires inside the soft black fabric channel run down the length of the inside of the sock. These “do not” produce any heat. HEAT SOX are Very Safe – low amperage electronics eliminates all possibility of shock or burn, even when wet. HEAT SOX have been designed to be worn inside boots or shoes – not alone. Content: 50% Thermastat, 30% Wool, 14% Nylon, 5% Acrylic
