Using these Casey Cotton Bed Sheets is easy. Just put the flat sheet over your mattress, place the fitted sheet on top with the tags facing the right way to ensure a proper fit, and add the pillowcases. When it comes to maintenance, you can machine - wash these sheets in cold or warm water. Use a mild detergent for the best results. Avoid using bleach as it can damage the fabric. After washing, tumble dry on a low setting. These sheets are durable, but it's still a good idea to not over - dry them. Also, don't iron on high heat as it might harm the cotton. With proper care, these sheets will last you a long time and keep providing you with a comfortable sleep experience.