Sunsbell 12V Black Winter Car Seat Heated Seat Cushion Warm Heater for Car in Winter Cold Weather Winter Driving Assistant Car Winter Heater Seat Warmer Pad- winter Cover. Simply plug into your vehicle's 12 volt DC outlet Plug Into A Standard Cigarette Lighter And Heats Up Immediately.don't seat on the chair during the heating. Enjoy immediate warmth at your seat,don't seat on the chair during the heating. Size(LWH): 100523cm(39.3x20x1.2 inch)