Using these Casey cotton sheets is a breeze. First, put the fitted sheet on your long single 40 - cm bed. Use the tags on the sides to make sure it's the right way around. Then lay the flat sheet on top. For a cozy touch, add a pillowcase to your pillows. When it comes to washing, you can use a regular cycle in your washing machine. Use a mild detergent to keep the fabric in good condition. Avoid using bleach as it might damage the color and fabric. After washing, tumble dry on a low - heat setting to maintain the softness. If you notice any loose threads, you can simply snip them off with scissors. With proper care, these sheets will last you a long time and keep you comfortable night after night.