Item Type: Heated Socks Material: Cotton Battery Compartment Battery Type: 4 x AA Batteries (Not Included) 1Warm Keeping: Heated socks keep your feet warm throughout the day, promote blood circulation and make you feel comfortable, perfect for use in cold weather. 2Battery Box: The heating socks are equipped with 2 battery boxes, the independent battery box is very safe to use, and it is easy to store batteries (not included). 3Even Heating: Combined with ergonomic design, the winter heated socks heat evenly and the temperature is stable, so that your feet are no longer cold and stiff in the cold winter. 4Multiple Applicable Scenarios: Thoughtful gifts for loved one, parents, relatives, etc. on birthdays. Perfect for skiing, hiking, ice fishing and other indoor or outdoor activities. 5Cotton Fabric: Electric heated socks is made of cotton fabric, safe and eco friendly, soft and skin friendly, easy to clean, has a long service life. 1 x Pair of Heated Socks 2 x Battery Compartment 1 x Manual