If you happen to be wondering what a duvet cover is, maybe we ought to start there. Picture a huge pillowcase intended to hold your down comforter rather than a pillow. They often have either a zipper on one side or a large overlapping opening in the center, as a way to secure the closure. The function of a duvet is to guard the pricey comforter within it. They are more commonly used as a ornamental cover on solid colored down comforters. Sometimes, duvet covers are utilized to re-cover a decorative comforter, or they may be used alone in hotter weather instead of a heavy blanket.