Comforter

A comforter (in American English), also known as a doona in Australian English,[1] or a continental quilt (or simply quilt) or duvet in British English,[2][3] is a type of bedding made of two lengths of fabric or covering sewn together and filled with insulative materials for warmth, traditionally down or feathers, wool or cotton batting, silk, or polyester and other down alternative fibers.

Like quilts, comforters are generally laid over a top bed sheet (and sometimes also blankets) and used to cover the body during sleep.

Duvets are another form of quilt, traditionally filled with feathers, though since the late 20th century often made of synthetic fibres or down alternatives.

Sometimes a comforter is sold as part of a "bed in a bag", usually a case of some sort with handles that contains an entire set of bedding in the same or a matching pattern: comforter and top sheet, fitted sheet, pillowcase(s), and perhaps pillow sham(s).

Shell/covering – The outer shells of comforters are typically made with cotton, silk, or polyester fabrics or blends, of varying thread counts.