DescriptionIf you are looking for a professional and affordable winter warm sock, then your research is over here. Thats because our self-heated magnetic sockcan meet your need. Adopted of premium material, it is practical and durable for long time use. It helps relieve leg fatigue, pain, regulate the nervous system, perform a foot massage and regulate blood circulation.Features- Color:Red, Black.- Material:Polyester-mixed cotton, Silicone.- Size: About29.00X9.50X0.10cm/11.40X3.73X0.04inch.- Made of material, it is durable and safe to use for long time.- Perfect for those who suffer from cold feet.- The bottom of the socks has a tourmaline design that heats itself to warm and relax your feet in cold weather.- For stimulating acupuncture points. Great for daily use. Relieve the food pain and fatigue, promoting the blood circulation.- Convenient to store and portable to take outside for travel. Suitable for skiing, climbing, skating, cycling in cold winter.Packing list2 pairs of x socks