[PERFECT SIZE] - 40 x20 Universal fits most vehicles, mesh design means you can roll down the windows and see through but wouldn't block your view while enjoying the fresh air . [INTELLIGENT DESIGN] - Premium quality breathable nylon mesh design, light and robust. The stretchable sun protection net protects passengers in the back seat from the effects of temperature and harmful UV rays. [DOUBLE PROTECTION] - Pediatricians often recommend car window screens to protect children and babies from harmful UV rays. Car window screens use double sun protection to block 98% harmful sunlight and UV rays to keep your babies safe. [EASY TO INSTALL & FOLDABLE] - The practical design allows you to attach them to your rear seat windows in seconds and you can easily fold them into a small size when not in use.