Our Self-Heating Massage Socks contain high quality fiber. It can be heated in cold weather, making the soles warm and dry, fully warmed and massaged the acupuncture points on the soles of the feet, accelerating the circulation of the whole body and increasing the temperature of the whole body. Its application method is very simple: Clean and dry feet. Wear this product on your feet. Just carry out your daily activities as usual. Stimulate acupuncture points on the soles of the feet and accelerate overall blood circulation, helping to increase body energy and enhance health.