https://www.prbuzz.com/travel/328416-monikas-marketplace-provides-double-car-shade-for-windows.html

Daily journeying can be a pain especially when it comes to springtime and summer. Not only that the harmful UV rays from the sun penetrate through the car windows but so does the heat. Many cars are not protected from UV rays because the windows are not tinted. The UV rays entering the vehicle can cause serious damage to the skin.