These socks are made of soft and comfortable combed cotton, perfect for outdoor activities like skiing, cycling, and hunting. The rechargeable battery heats the socks for up to 4 hours, promoting blood circulation and keeping you warm. Comes with charging cable and manual. Sizes S/M/L available. Stay warm and active with these thermal powered heating socks. Features 1. Especially suitable for rock climbing, cycling, running, walking, skiing, skiing, mountaineering, skiing, mountaineering, skiing, cycling, cycling, hunting, etc. 2. Made of refined sulfur cotton, good elasticity, warmth, soft and comfortable. 3. The most high-end heating time is 4 hours. 4. Battery heating socks help promote blood circulation and keep warm. Specifications: Product Name: Socks Material: Combed Cotton Size:S,M,L Color: Red Package Included: 1 Pairs Socks 2x Batteries (3400 mAh) 1x Charging Cable 1x Remote Control 1x Manual