Using this car rear seat sun shade is a breeze. First, open the car door. Then, simply attach the magnets to the metal window frame. If your car has a rubber window frame, don't worry, just attach the magnets to the car frame. It installs in just 1 second and won't stop your windows from going up and down. It's freely retractable, so you can adjust it as you drive to stay cool. The 4 - layer sunscreen does a great job of keeping the strong sunlight out. And with its fashionable design pictures, you can choose the one you like. When it gets dirty, just wash it as it's washable. To keep it in good condition, avoid using sharp objects on it and store it in a dry place when not in use.