Feature:1. Made of high quality polyester cotton, soft and comfortable with long service life. The sole of the socks is designed with tourmaline, which can self-heat to keep your feet warm and take care of them in cold weather.2. Heated socks can relieve leg fatigue, relieve pain, regulate the nervous system, dispel moisture and deodorization, eliminate leg and foot swelling, exfoliate, produce static foot massage, and regulate blood circulation. Heated socks can relieve chronic foot disorders such as impaired circulation, arthritis, colds or other pleasant and warming symptoms.3. Winter thermal socks are perfect for outdoor activities, skiing, snowboarding, hiking, field hockey and other sports. The bottom of the socks are designed with tourmaline, which automatically warms up and relaxes the feet in cold weather.4. The socks are lightly heated and the foot warmer can be used for foot acupressure, which has a warming effect on cold feet, relieves leg fatigue and regulates the nervous system. Self-heating eliminates dampness, odor and leg swelling, and regulates blood circulation.5. The design is very reasonable, fitting the curve of the foot, so that the hot spot is close to the skin of the sole.Specification:Material: cotton + polyester + spandexSize: one size (38-44)Weight: 40gColor: Black, Red, WhiteTips:1. If the heat caused by excessive use or improper maintenance cannot be released, please put the heated socks under the sun directly to recover.2. Heat socks need to be washed by hand, quickly, not for a long time in the water (to prevent damage to the heating point), wash with flowing warm water, do not use detergent.