Duvet
A duvet ( , ; ) is a type of bedding consisting of a soft flat bag filled with down , feathers , wool , cotton , silk or a synthetic alternative , and typically protected with a removable cover , analogous to a pillow and pillow case . 
<triplet> bedding <subj> pillow <obj> has part <triplet> down <subj> feather <obj> subclass of <triplet> cover <subj> bedding <obj> part of