Polyester Cotton Imported Machine Wash Foot Massage Founction-Our tourmaline slimming health socks with high quality natural hot spot to stimulating the acupuncture points of the feet to achieves a massage effect. It can stimulate the blood circulation of the feet. Self heating socks keep your feet warm in winter Ergonomic Design-Anti-slip design on the bottom, provides better grip, improves stability and balance, keeps you safe, avoids injuries and better control and improve your body movements Standard Size-Our warm socks are a one-size-fits-all, super elastic and stretchable, suitable for most adults, unisex Multifunction-The tourmaline used at the bottom has mild heat, fully improves the microcirculation of the footsteps, relieve leg fatigue, relieve pain, eliminate swelling of legs and feet, create static foot massage, regulate blood circulation Make Exercise Comfortable-Warm socks keep feet warm throughout the winter, ideal for outdoor activities, mountaineering, skiing, winter fishing, jogging, winter hunting, biking, hiking, ice hockey and snow shoveling, which automatically warms up in cold weather and relaxes your feet