Auto Drive Beach Design Windshield Sunlights Block Accordion Sunshade AD23A-79 1 Pack, 63'' x 28.5''. The sunshade AD23A-79 consist of four material layers, the inside core material layer of single bubble is thick as 2mm which can highly resistant to heat sunshine and UV rays get inside your car.  The back side of this product is silver color PET film, which has a great performance on reflecting sunshine back to car outside that meet the requirement of its function of keep car interior cool.   This product support installation direction in both sides, you may choose the fashion pattern summer beach against the windshield or the silver PET side against the windshield, this will not affect its heat resistance function at all.  Trust me , it's really a good helper for your lovely car interiors to avoid cracking, color fading or aging in summer days, and absolutely will help you on comfortable driving experience in summer!