Size:Twin/Twin X-Large Ã¯Â¾Â |Ã¯Â¾Â Color:Grey Update your space with style and comfort. The Intelligent Design Tanya duvet cover set combines a modern Grey with a soft yellow reverse to highlight this beautiful white damask print. Two decorative pillows feature fabric manipulation and a geometric embroidery design to add dimension to the top of bed. 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.