Made with thermal and lightweight materials to fit under jacket or use by itself, the Heated Vest is as versatile as you need it to be. Two zippered hand warmer pockets, two internal storage pockets and one additional internal battery pocket offer plenty of storage to keep both you and your personal items warm. A built-in, chest mounted heat controller is conveniently located offering quick and easy access to warmth. Use with a compatible Li-ion battery using the USB input connector for portability. DC:5V, Draw: 9W.