Using your Sferra Celeste Twin Duvet Cover is easy. Just slide your duvet inside and enjoy the softness. When it comes to cleaning, machine wash it in warm water on a gentle cycle. Don't use bleach as it can damage the fabric and make it turn yellow. Also, don't use fabric softener. Wash dark - colored duvet covers separately to prevent color bleeding. Tumble dry on low heat and take it out while it's still a bit damp. If it gets wrinkled, you can steam iron it on the 'cotton' setting. Following these steps will keep your duvet cover looking and feeling great for a long time.