Bring the ocean into your home with the Harbor House Maya Bay Collection. A soft seafoam blue is the accent color used in this beach themed duvet cover and shams playing up the seashell and sand dollar embroidery. Made from 200 thread count cotton, this calming collection allows you to escape from reality in your own home. 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.