Made of thickening cotton material that is super comfortable, breathable and well padded.Soft heated socks powered by 2 AA batteries keep you warm all day, please buy the batteries on your own.Carbon fabric silk heating, 50℃ consistent heat temperature, get warmth fast and pay back you nice and toasty feet in the cold winter.Improve blood circulation, prevent foot from cracking and hurting in cold weather.Perfect for indoor and outdoor activities like skiing, fishing, walking and hunting.50℃ consistent heated socks powered by 2 AA batteries keep you warm all day. Improve blood circulation, prevent foot from cracking and hurting in cold weather. Perfect for indoor and outdoor activities like skiing, fishing, walking and hunting.Specification:Item Type: Heated SocksMaterial: CottonBattery: 2 * AA batteries(Not included)Color: BlackSize: 41.5 * 10.5cm / 16.3 * 4.1inchPackage Weight: approx. 154gPackage list:1 x Pair Heated Socks2 x Battery CaseNote:1.Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.Suitable for outdoor sports.