Grabber® Battery Powered Heat Sox keep your entire foot warm in the coldest conditions with the flick of a switch. The heating element is located in the toe area providing ideal heat transfer to the entire foot. Generated heat does not exceed body temperature and won't feel hot to the touch. Wires are wrapped in soft fabric for increased comfort and don't produce heat. These socks are safe and won't shock or burn, even when wet. A 65/35 wool/nylon blend wicks moisture, keeping your feet dry. Remove battery pack before washing. Hand wash only. Each sock is powered by four AA batteries (not included). Diabetics, persons with circulatory problems, or anyone who may have sensitivity to heat applications applied against their skin, should not wear heated socks. Imported. Ht: 13.5" Men's sizes: M-XL. Color: Grey.