Using your Sferra Fiona King Fitted Sheet is easy. Just place it on your king - size bed. Enjoy the smooth feel and the beautiful sheen every night. When it's time to clean, remember to use warm water and a gentle cycle in your washing machine. Never use bleach because it can damage the fabric and make it turn yellow. Also, don't use fabric softener. Wash dark - colored sheets separately to prevent color bleeding. For drying, use low - heat tumble dry and take the sheet out while it's still a bit damp. If the sheet loses its shine, you can iron it on the 'cotton' setting to bring back its luster.