Custom-fit sunshade - MADE IN USA!! HeatShield - Advanced Windshield Reflector INSTALLATION HeatShield installation is easy and quick. Lay the Heat Shield across the dash. Lift up to the windshield. Drop the sunvisors for support HeatShield is stiff enough to be supported by the sunvisors alone, but it is flexible enough to be bent around the mirror. Once installed, HeatShield will reduce the interior temperature at the dashboard by as much as 40 deg. F. (25 deg. C.) HeatShields are simple to use, but they are just as easy to store! PRODUCT STORAGE When not in use, store your HeatShield like this: Lift sunvisors and pull HeatShield down. Roll up from end to end. Wrap the attached Velcro strapHeatShield is an automotive windshield reflector, \"sun shade,\" or \"sun visor,\" custom designed to fit the shape of each car model\'s windshield. The HeatShield material is simple and unique. A special metallized polyester film, laminated to a thin layer of closed-cell foam, with a clear polyester film back. HeatShields are custom cut using the latest in computer-aided cutting technology. Then they are sewn around the edge with a cloth binding. So HeatShields are reflective, insulating and custom fit for every car.