To use these napkins, simply unfold them and place them on your dinner plate. They're great for both casual and formal dinners. When it comes to cleaning, you can machine - wash them in cold water with a gentle detergent. Avoid using bleach as it may fade the yellow color. After washing, tumble dry on low heat to keep them looking their best. Also, don't iron them at a high temperature as it might damage the polyester material. With proper care, these napkins will serve you well for a long time.