A queen-size mattress, which measures 60 inches by 80 inches, takes a full or queen duvet cover, which measures 88 inches by 92 inches. A duvet is soft, flat bedding filled with down feathers or a synthetic material.
Unlike a comforter, which is meant to cover other bedding, a duvet is one piece of bedding that is used instead of sheets, blankets and other bedding. It is usually protected by a cover that is removable, washes easily and can be closed to secure the duvet inside. Due to their design flexibility and ease of care, duvet covers make it easy to change the style of a bedroom.