Solar Car Vent Fan Cooler Window Sun Ventilation System Vehicle Auto Truck Van Solar Auto Cooling Fan Prevent Your Parked Car From Becoming A Sauna On Even The Hottest Summer Days With This Solar Powered Fan That Blows Out Hot; Stale Air And Drawers In Fresh Cool Air. Fits On The Top of Any Car Window With Secure Protective Rubber Padding. Also Eliminates Pet And Tobacco Odor By Improving Air Circulation For A Cooler; Fresher Car. No Batteries Required. Plastic. 5L X 1"W X 4"H."