The Delancey bed set is where fun meets comfort. The entire top of the duvet cover is ruched fabric that makes it look billowy and soft while there are seams down the length of it to provide structure and gives the illusion of a scalloped edge to the end of the bed. This duvet cover is made from 100% cotton on the front and reverse while the shams have a cotton front and polyester reverse. A duvet cover is a protective cover for your comforter, most likely for your down comforter. Sometimes it’s referred to as a comforter cover. Duvet covers are not filled. It has an opening where you can insert your comforter. Filler not included.