This car sunshade is made of polyester coated with good quanlity silverplaster, UPF50+. It can prevent your car from hurting by strong direct sunlight, and reduce the temperature of car inner effcetively. It is a very useful automative tool in hot summer. It designs like a concave umbrella, you can install it inside your car windshield as fast and easy as open a unbrella, and easy to uninstall and put into the matching leather sleeve. 31" W x 51" L