Using your Sferra Celeste Full/Queen Duvet Cover is a breeze. Just slip your duvet inside it and enjoy the soft and comfortable feeling. When it comes to cleaning, remember to machine wash it in warm water on a gentle cycle. Don't use bleach as it can damage the fabric and make it yellow. Also, don't use fabric softener. Wash dark - colored items separately to prevent color bleeding. For drying, tumble dry on low heat and take it out while it's still a bit damp. This helps keep the fabric in good shape. If you need to iron it, use the steam iron on the “cotton” setting. With these simple steps, your duvet cover will last you a long time and continue to give you a great night's sleep.