Choose this fluffy 60% duck down duvet for 100% snuggly happiness If you're looking for a soft, cloud-like duvet, but can't stretch to goose down, this could be the answer. 60% duck down makes this duvet beautifully soft & marshmallow-like, while the feather content adds weight & bulk. It's so lovely you may find it a struggle to leave your bed in the mornings. & we've taken care of the other details too. A soft cotton percale casing increases this duvet's softness, while satin piped edging & box-stitched quilting keeps this duvet working very hard for years to come.