Using your Sferra Fiona King Duvet Cover is easy. Just slip it over your duvet and enjoy the soft, luxurious feel. When it comes to maintenance, remember to machine wash it in warm water on a gentle cycle. Never use bleach because 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. After washing, tumble dry on low heat and take it out while it's still a bit damp. If it loses its shine, you can iron it on the 'cotton' setting to bring back that beautiful luster.