Using your Sferra Catena Twin Flat Sheet is a breeze. Just lay it on your bed to instantly enhance the look. When it's time to clean, machine wash it in warm water on the gentle cycle. Remember, don't use bleach as it can weaken the fabric and make it turn yellow. Also, avoid using fabric softener. Wash dark colors separately to prevent color bleeding. Tumble dry on low heat and take it out while it's still a bit damp. If you need to iron, set your iron to the 'cotton' setting and iron on the reverse side of the fabric. With these simple steps, your sheet will stay in great condition for a long time.