The 12V StreetRider Jacket is designed to be worn as your favorite 4-season outer jacket. Now you can ride anytime, rain or shine, with water & windproof heated outerwear. The Outer Jacket begins warming your body within seconds using any 12V DC power source by connecting directly to a 12V battery or a 12V accessory outlet. Our advanced heating technology allows you to maintain a constant level of thermal comfort at high speeds or altitude.