The ActionHeat Wool 3.7V Rechargeable 2.0 Heated Socks provide advanced, long-lasting warmth for cold-weather activities. These upgraded 2.0 socks feature an extended heating area and a slim, curved battery that fits comfortably in a secure pocket. 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 wool blend with acrylic, polyester, nylon, cotton, and spandex, the socks offer comfort, flexibility, and durability. Ideal for winter sports, work, or relaxing at home, these heated socks combine innovative technology with practical design.