Duvets and comforters are used as a layer to keep you warm while sleeping. A duvet is lightweight and warm. It is designed to be used with a protective cover. Whereas, a comforter is a quilt stitched with layers and has less filling than a duvet. It usually comes as a part of a bed set or can be purchased separately. Duvets and comforters are both good in their own way and work efficiently. Our suggestion is to choose one that caters perfectly to your personal needs.