Stay warm and comfortable with the Winter Self-Heating Socks! These socks are made of high-quality polyester cotton, making them soft and comfortable with a long life. The bottom of the socks have self-heating design which can self-heat to warm and relax your feet in cold weather. The perfect tool for legs with varicose veins, as well as in renal failure, they also stimulate acupuncture points. Great for outdoor activities such as skiing, snowboarding, hiking, hockey, and other sports.
