Keep your parked car cool and fresh with the acool Modern Car Ventilator. Featuring an innovative design, this device draws in outside air and expels hot air out. Using a four fan system, acool replaces all of the air inside your car twice in only five minutes. Additionally, each ventilator sports a custom made design for each car. Offering an ideal fit for your rear door window, it doesn’t require any trimmings or rubber strips to seal your window tightly. Providing triple protection, the ventilator does it work while keeping your car securely closed. Moreover, acool gets it power from a 50W solar panel or from the 12-volt power receptacle in your car. Complete with an air filter, acool only draws clean air in.