IdeaWorks Solar Auto Fan/Vent (1-Pack) TEMPERATURE REGULATOR: The auto fan circulates fresh air to keep your car at a comfortable temperature when not in use FRESH AIR CIRCULATION: The fan keeps the car fresh by venting the stale, warm air out, and blowing cooler air in ODOR ELIMINATOR: The air ventilation helps remove pet or tobacco odor SOLAR POWERED: The built in solar panel supplies the fans energy. No power cables or disposable batteries are needed FLEXIBLE FITTING: Designed with a rubber padded lining, the fan can fit almost any car window except tinted windows