Product Description: Please Read Carefully – Installation Instructions These magnetic curtains are designed to cling to the car door frame, ensuring they do not fall off. The assembly process is straightforward – simply open the car door and place the sun shades on the window frame (metallic part), allowing the magnet to snap into place automatically. Note that the front windows' sun shades are tapered from end to end, which does not compromise visibility of the side mirrors. It's essential to note that these will only adhere properly if you open the car doors first and then apply them to the window. For a clearer understanding of how to use the product, visit YouTube and search for 'Magnetic Sunshades for Car.' If you have any other questions about the product, feel free to contact us through Amazon's Buyer-Seller Message Service.