Using your Casey Cotton Fitted Sheet and Pillowcase Combo is a piece of cake. First, lay the fitted sheet on your king single 40cm bed. Use the convenient tags to make sure it's properly aligned. Then, put the pillowcases on your pillows. For a good night's sleep, just hop in and enjoy the cool, breathable cotton. When it comes to maintenance, these sheets are easy to take care of. You can machine - wash them in cold or warm water. Don't use harsh detergents as they might damage the fabric. After washing, tumble dry on a low setting. Avoid over - drying to keep the sheets soft and durable. And remember, although these sheets are very durable, try not to use sharp objects on them to prevent tears.