Using these Casey Cotton Sheet Sets is a breeze. Just put the fitted sheet on your king single bed (60cm), making sure to line up the tags for a perfect fit. Then, add the flat sheet and your favorite pillowcases. When it comes to maintenance, these sheets are easy to take care of. You can machine - wash them in cold or warm water with a gentle detergent. Avoid using bleach as it may damage the fabric. After washing, tumble - dry on a low setting. This will help keep the sheets soft and maintain their durability. Remember to remove the sheets from the dryer promptly to prevent wrinkles. With proper care, these sheets will serve you well for a long time and continue to provide a comfortable sleeping experience.