Using these sheets is a breeze. Just put the fitted sheet on your king - sized 60cm bed first, using the tags to make sure it's in the right place. Then lay the flat sheet over it. For a cozy touch, add the pillowcases. When it comes to washing, use a gentle cycle with cold or warm water and a mild detergent. Avoid using bleach as it can damage the fabric. After washing, tumble dry on low heat. These sheets are made to last, but to keep them in top shape, don't over - dry them. Also, try to avoid ironing on high heat as it might harm the cotton. With proper care, you'll enjoy these comfortable sheets for a long time.