Using these Casey Cotton Bed Sheets is a breeze. First, place the fitted sheet on your single 40cm bed. Use the tags on each side to make sure it's correctly aligned. Then, put your pillow into the pillowcase. For a good night's sleep, enjoy the breathability of the premium cotton. When it comes to maintenance, you can easily wash these sheets in your regular washing machine. Use a gentle cycle with mild detergent to keep the fabric in good condition. Avoid using bleach as it may damage the cotton. After washing, tumble dry on a low - heat setting. With proper care, these sheets will maintain their durability and keep you comfortable for a long time.