Using these Casey Cotton fitted sheets is a breeze. First, identify the tags on the sheet to ensure it's placed correctly on your super king 40 - cm deep bed. Just spread it out and tuck the edges under the mattress. For a restful night, you'll immediately feel the coolness and comfort of the breathable cotton. When it comes to maintenance, these sheets are easy to take care of. You can machine - wash them in a gentle cycle with mild detergent. Avoid using bleach as it might damage the fabric. After washing, tumble - dry on low heat or hang them to dry. This will help maintain the durability of the sheet and keep it looking and feeling great for a long time.