Using these pillow covers is a breeze. Just slide your pillow inserts into the envelope - style covers. You can place them on your sofa, chair, or bed to instantly spruce up your space, whether it's indoors or outdoors. As for maintenance, if they get dirty, spot - clean them with a mild detergent and water. Avoid machine - washing as it may damage the fabric. Keep them out of direct sunlight for long periods to prevent fading, thanks to their UV resistance but still to maintain their color. And since they're mold and mildew resistant, you don't have to worry too much about damp environments, but try to keep them dry for best results. These covers are not for commercial use, so use them in your personal living spaces for the best experience.