4-speed temperature adjustable:Temperature: 35 -65 Full heating Place the heating wire on the soles and instep of the heated socks. The heat generated can warm your feet. The soles of the feet are arranged in a U-shaped pattern, providing even and comfortable heating.Size and Fashion] Medium size warm socks suitable for both men and women. One size fits EU sizes 35-43 Long cotton hose can cover the calves, which is spacious, warm and fashionable Need to keep warm in winter] It is very suitable for hunting, skiing, fishing, hiking, dog walking, snowboarding, motorcycles, horse riding, and sports events. Heating sock batteries is a good choice for cold winters; This is indeed the perfect gift for family and friends for New Year or Christmas.Socks have a large battery capacity of 4000mAh, which can keep you warm all day long. They are perfect for hunting, skiing, fishing, hiking, dog walking, motorcycle riding, outdoor sports, and more. An essential tool for elderly people to keep their feet warm throughout the winter