The ActionHeat Cotton 3.7V Rechargeable 1.0 Heated Socks provide long-lasting warmth and comfort for cold-weather activities. Built-in heating panels strategically placed on the top of the toes deliver consistent heat using ultra-fine fibers. Powered by 3.7V rechargeable batteries, these socks provide up to 8 hours of adjustable warmth. Made from a cotton blend with polyester, nylon, and spandex, the socks offer softness, flexibility, and durability. Ideal for outdoor activities or lounging at home, these battery-heated socks combine innovative technology with practical design.