Duvet covers is an outer cover for your duvets. The duvet cover helps duvets during the day to maintain its cleanliness. It protects your duvets from dust, dirt, and molds. It is important to clean a duvet cover on a regular basis in order to maintain the freshness of your duvets. These covers are usually washable. You can find many duvet covers in a variety of shapes, colors, and designs.