Using your Sferra Estate King Duvet Cover is easy. Just slip your duvet inside and enjoy the softness. When it comes to maintenance, remember to machine wash it in warm water on a gentle cycle. Never use bleach or fabric softener, as these can damage the fabric. Wash dark colors 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, use a steam iron on the 'cotton' setting to make it look as good as new.