Comforter

A comforter (in American English), also known as a doona in Australian English, or a continental quilt (or simply quilt) or duvet in British English, 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. Duvets originated in rural northern Europe and were originally made from the down of the eider (Somateria), a type of duck whose feathers are well known for their thermal insulation properties. Today, duvets are used especially in Europe and have become popular worldwide since the late 20th century. Their popularity in northern Europe is reflected in their common name, Nordic duvet, and since the late 20th century are often made of synthetic fibres or down alternatives. A comforter is sometimes covered for protection and prolonged use. Comforter covers are similar in principle to pillowcases, usually closed with zippers or buttons.