Self-Heating Tourmaline Therapy Socks Winter Warm Massager Physiotherapy Socks Foot Health Care Features: 1. Made of high-quality polyester cotton with the characteristics of soft and comfortable, has a long life. 2. The bottom of socks has Tourmaline design which can self-heating to warm and relax your feet in cold weather. 3. Tourmaline socks relieve leg fatigue, pain, regulate the nervous system, self-heating, remove moisture and stop odor remove swelling of the legs and feet peeling of the skin, produce a static foot massage, regulate blood flow. 4. The perfect tool for legs with varicose veins, as well as in renal failure. 5. Good therapy for the ankles and feet when frostbite. 6. To stimulate acupuncture points. Daily use any time of day. Wash under running warm water without detergents. 7. Great for outdoor activities: Skiing, snowboarding, hiking, hockey, and other sports. Specification: Material: Tourmaline+Polyester Cotton Effect: Anti-Fatigue, Massage Socks, Health Care Socks, Self-Heating Socks Suitable Foot Length 23.1-27.5cm/9.09 X 10.83" Color: White, Blue Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3mm measuring deviation due to manual measurement. Included: 1 Pair X Tourmaline Therapy Socks