Using these pillow covers is a breeze. Just unzip the cover and insert your pillow. They're great for indoor use on your sofa, armchair, or outdoor patio furniture. When it comes to cleaning, you can spot - clean the covers with a mild detergent and a soft cloth. Avoid using harsh chemicals as they might damage the fabric. Since they're UV - resistant, they can stay outdoors for a long time, but it's a good idea to bring them inside during heavy rain or extreme weather. There's no need for any assembly, so you can start using them right away. Always choose the options (color, size, material, shape, etc.) you want on the page to get the exact product you need.