KEEP FEET WARM - Winter heated socks for men and women, the bottom of the socks has a tourmaline design that can warm up to keep your feet warm anytime and anywhere, without electricity, no time and geographic restrictions. When you use our tourmaline socks when walking, you can enjoy new vitality and comfort. Foot massage Use high-quality natural hot spots, remove moisture and eliminate odor. To stimulate foot acupuncture points, achieve massage effect, relieve leg fatigue and regulate blood circulation. Using tourmaline socks when walking is a natural and relaxing way of foot massage. Cotton material: made of high strength cotton, soft, elastic thick and comfortable. One size fits most men and women. Keeps feet warm in cold weather, even heat distribution for optimal blood circulation in the feet. OUTDOOR ACTIVITIES: Foot warmer for men and women. Skiing and other winter sports. Army, police and rescue personnel. Against the cold in the house. Outdoor cycling. Work in the cold outdoors or in a cold room. Suitable for all kinds of outdoor activities such as climbing, skiing, fishing, jogging, hunting, cycling, hiking. Keep your feet warm all day. Note: The self-heating point on the sock should be in contact with the soles of the feet, not the sole of the shoe. We have prepared for you two pairs of self-heating socks that you can easily replace and clean so you are always warm.