Heated socks with a temperature of 50 , powered by 2 AA batteries, provide warmth throughout the day Improve blood circulation, prevent cracking and injury to the foot in cold weather. Characteristics: 1. Made of thickening cotton material, which is super comfortable, breathable and well padded. 2. Soft heated socks powered by 2 AA batteries keep you warm all day, batteries should be purchased by yourself. 3. Silk heating made of carbon fabric, constant temperature 50 , quickly heat up and give away nice and warm feet in the cold winter. 4. Improve blood circulation, prevent cracking and injury to the foot in cold weather. 5. Ideal for indoor and outdoor activities such as skiing, fishing, walking and hunting. Specification: Item Type: Heated Socks Material: cotton Black color Size: 41,5 * 10,5 cm / 16,3 * 4,1 inch Package weight: approx. 154g List of packages: 1 x Pair of Heated Socks 2 x Battery Housing