These magnetic curtains are mount type curtains which clings to car door frame and does not fall off Assembly is simple - Open the Car door and place the Sun Shades on the Window frame (Metallic part) the magnet will Automatically snap on. Sun Shades for the front windows are tapered from end to end and does not effect on the front end to for visibility of the side mirrors. Note - These will not fix if you fix them with doors closed or by sitting inside the Car, you need to open the Car doors and then put them on window.