A parked car can act like a green house on a hot and sunny day and can be unbearably hot to get into the large car windows combined with the metal bodywork absorb and magnify the suns rays so that the inside of your car is even hotter than the outside temperature this solar vent is the ideal way to keep the inside of your parked car cool simply slip onto the top of your car window fits all makes and models and the vent will suck out all the hot air from inside your car replacing it