Features:1. Made of high-quality cotton cotton with the characteristics of soft and comfortable has a long life. Thicker material it can effectively keep warm even in severe cold and bad weather. 2. Not only warm the best heating socks foot massage socks: warm feet. Warm your toes without the need of the stove with these self- heating socks. They are perfect for wearing in the cold winter months or for when you are traveling. 3. The bottom of socks has Tourmaline design which can self-heating to warm and your feet in cold weather. 4. Good therapys for the ankles and feet when frostbite. To stimulate acupuncture points. Daily use any time of day. Wash under running warm water without detergents. 5. Professionally customized for all sports mountain climbing hiking jog running tennis basketball yoga gym walking travel standingNotice:1.Actual color may be slightly different from the image due to different monitor and light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Material: Cotton+Polyester includes: A PAIR Winter Self-heating Socks "