A duvet is like a slip-cover for a blanket...a great way to cover-up an old & worn-out comforter to give it longer use! Or we use it at our house to cover a down/feather tick blanket for cold winter months. This patchwork duvet pattern with button-opening at one end includes patterns for Twin, Full/Queen, and King size beds, yardage requirements, fabric suggestions as well as two different pillow sham options. From Kwik Sew Pattern Company.