Using your Sferra Fiona Twin Fitted Sheet is easy. Just place it on your twin - sized bed and tuck it in around the mattress. When it's time to clean, machine wash it in warm water on a gentle cycle. Remember not to 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. After washing, tumble dry on low heat. Take the sheet out while it's still a bit damp. If you want to bring back its shine, you can iron it on the 'cotton' setting. This way, your sheet will stay in great condition for a long time.