This windshield cover acts as a reflector to keep the hot sun from beating down into your car. In the winter, it makes snow removal easier and faster. Place it on your windshield when you get out, then pull it off, along with any accumulated snow, before you take off again. There's no need to scrape your windshield or wait for the car to warm up to defrost it. Fits most cars, trucks and SUVs. Rolls up for convenient storage.