Features 1. Keep your feet warm: The foot warmer is made of high quality polyester, which is soft and comfortable and has a long service life. The sole of the socks is designed with tourmaline, which regulates blood circulation by its own heat, and relaxes the feet with heat. 2. Self-heating effect: mild fever, you can use heating socks for foot acupoint massage, which has a warming effect on cold feet. It can relieve leg fatigue and regulate the nervous system. Self-heating regulates blood circulation by removing moisture, odor and swelling from the legs. 3. Humanized foot stick design: fit the foot curve, make the hot spot close to the sole skin, comfortable and not clumsy. Exquisite toe closure technology, high sewing strength, comfortable, warm and durable. 4. Adjustment function: use at any time of the day. Wash in running warm water without detergent. Good treatment for ankles and feet in case of frostbite. The sole of the sock is designed with tourmaline to warm and relax your feet in cold weather by self-heating. 5. Make sports comfortable: Winter thermal socks are perfect for outdoor activities, skiing, snowboarding, hiking, hockey and other sports. The sole of the sock is designed with tourmaline, which automatically warms in cold weather and relaxes your feet. Specifications Material: Polyester Size: 38-44 (24-28 cm) Color: Black, White, Red Weight: 37g Package Included: 1 pair x heating socks WUZHOU