Window shades are made of nylon and polyester mesh material. It is important to check the material of the product before placing an order. The sunshade material affects the visibility and the level of protection. The static and exterior fitting sunshades cling to the window frame tightly. You can roll down the window without having to expose the passengers to the sunlight. Some products feature a metal wire that is used to maintain the sunshades’ shape once they are positioned on the side windows.