Using these Casey cotton sheet sets is easy. Just put the fitted sheet on your single 40cm bed first, using the tags to make sure it's in the right position. Then add the flat sheet and pillowcases. For a cozy feel, you can layer them with your favorite blankets. When it comes to cleaning, you can machine - wash these sheets in cold or warm water. Use a mild detergent and avoid bleach to keep the fabric's quality. Tumble dry on a low setting to prevent shrinkage. Store the sheets in a dry place when not in use. With proper care, these sheets will keep you comfortable for a long time.