The ActionHeat Cotton 3.7V Rechargeable 2.0 Heated Socks provide advanced, long-lasting warmth for cold-weather activities. These upgraded 2.0 socks feature a new extended heating area and a convenient slim battery with a secure pocket for a more comfortable fit. Built-in heating panels strategically placed over the toes deliver consistent heat using ultra-fine fibers. Powered by 3.7V rechargeable batteries, they provide up to 7 hours of adjustable warmth. Made from a cotton blend with polyester, nylon, and spandex, the socks offer comfort, flexibility, and durability. Ideal for outdoor sports, work, or relaxing at home, these heated socks combine innovative technology with practical design.