Feature:1. Heating socks with heating on both sides of the sole and back of the instep. The heating material is made of high‑efficiency and high‑strength composite fiber material. While electrifying and heating, it can radiate infrared rays and promote blood circulation.2. Mobile power supply, wireless heating is portable and beautiful, and it is warm wherever you go.3. Made of elastic material. Strong water absorption, strong air permeability. Wearing soft, warm, comfortable, washable, fast heating.4. The heating socks are flexible and suitable for different foot types, suitable for adults, men and women.5. It is very suitable for hiking, hunting, ice fishing and other outdoor activities in cold weather.How to Use:This product is a heating socks with heating on both sides of the sole and back of the instep. The heating material is made of high‑efficiency and high‑strength composite fiber material. While electrifying and heating, it can radiate infrared rays and promote blood circulation. It has the functions of warm keeping and health care, such as convenient use, high heat generation, and strong heat preservation performance.Instructions:1. Before using this product, first purchase 6 AA dry batteries (alkaline dry batteries are recommended), and each battery box contains three dry batteries.2. After the battery is installed, insert the