A down-filled blanket is a type of bedding that provides warmth and comfort. It is usually filled with down feathers, which are the soft, fluffy feathers from the underside of ducks and geese. The two most common types of down-filled blankets are comforters and quilts. Comforters are typically made with a single layer of fabric and filled with down feathers, while quilts are made with multiple layers of fabric and filled with down feathers. Both comforters and quilts provide warmth and comfort, making them popular choices for bedding.