Using your My Linen Casey Cotton Fitted Sheet and Pillowcase Combo is a breeze. First, find the side of the fitted sheet with the tags to ensure it's placed correctly on your Super King 40 - cm deep bed. Then, tuck it in tightly around the mattress. Place the pillowcases on your pillows. For the best results, wash these sheets in cold or warm water using a gentle detergent. Avoid using bleach as it can damage the cotton fabric. You can tumble dry on a low setting. Ironing is optional, but if you do, use a medium - heat setting. These sheets are durable, but to keep them in top condition, don't overload the washing machine and separate them from items with zippers or hooks that could snag the fabric.