Size:Twin/Twin X-Large Ã¯Â¾Â |Ã¯Â¾Â Color:Aqua Create a color blocked look in your bedroom with the Adel collection. This geometric chevron design uses light grey, taupe grey and Aqua for a unique update to this pattern. Two decorative pillows features teal as well to pull this whole look together. 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.