Condition: 100% brand new & high quality Material: Self-heating, Polyester cotton Weight: 40g Type: Self-heating socks Effect: Anti-fatigue Massage Socks: Health Care Socks Self-heating Massage Sock: Self-heating Magnetic Socks 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 Self-heating design which can self-heating to warm and relax your feet in cold weather. 3. Self-heating 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. Note: There may be some subtle differences between the color of the image and the actual project. Thanks to the manual measurement, please allow 1-2mm difference, thank you. Package Included: 1 pair of self-heating socks