Condition: 100% Brand New and High Quality Material: Self-heating, polyester cotton Weight: 40g Type: Self-heating socks Efficacy: Anti-fatigue Massage socks: health socks Self-heating massage socks: Self-heating magnetic socks Features: 1. Made of high-quality polyester-cotton, it has the characteristics of softness and comfort, and has a long service life. 2. The bottom of the socks has a self-heating design, which can self-heat to warm and relax your feet in cold weather. 3. Self-heating socks relieve leg fatigue, pain, regulate nervous system, self-heating, dehumidify and deodorize, eliminate leg and foot swelling, peeling, produce static foot massage, regulate blood flow. 4. Perfect tool for leg varicose veins and kidney failure. 5. Good treatment for ankles and feet when frozen. 6. Stimulate acupoints. Use daily at any time of day. Wash under lukewarm water without detergent. 7. Great for outdoor activities: skiing, snowboarding, hiking, hockey and other sports.notes: Image colors may differ slightly from the actual item. Thanks for manual measurement, please allow 1-2mm difference, thank you. Package includes: 1 pair of self-heating socks