A duvet (UK // or UK //; US //; from the French duvet [dyˈvɛ] "down"), also known as a doona in Australian English or a continental quilt (or simply quilt) in British English, but this usage is no longer common, is a type of bedding, a soft flat bag filled with down, feathers, wool, silk or a synthetic alternative, and protected with a removable cover, analogous to a pillow and pillow case. Duvets originated in rural Europe and were made from the down feathers of the eider duck, known for its usefulness as a thermal insulator.
- "There is one thing very particular to them, that they do not cover themselves with bed-clothes, but lay one feather-bed over, and another under. This is comfortable enough in winter, but how they can bear their feather-beds over them in summer, as is generally practised, I cannot conceive."
Duvets reduce the complexity of making a bed, as it is a single covering instead of the combination of bed sheets, blankets, and quilts or other bed covers. The duvet itself fits into a specially made cover, usually of cotton or a cotton blend. The duvet cover is removed and laundered as often as the bottom sheet and pillow cases. The duvet itself may be cleaned much more rarely, and depending on its contents, may require specialist dry cleaning.
A duvet is not to be confused with a comforter. While comforters go on top of the traditional sheets and blankets, duvets are used by themselves.
Regional variations 
Duvets are the most common form of bed covering, especially in northern Europe. They became popular throughout the world in the late 20th century.
Originally this was the standard name used across Australia. Now, however, particularly in eastern regions, a duvet is often called a "doona", which is the brand name created by Kimptons (Northern Feather). The Tontine Group acquired the trademark in 1991 when Pacific Dunlop took over the company. "Doona" is derived from the equivalent common Scandinavian term dyne and was popularized by the retailer IKEA in the 1970s.
In the US, confusion often occurs as the word "duvet" is sometimes used to refer to a comforter cover rather than the down blanket itself.
In some European countries, any thick, warm blanket may be called a duvet.
Standards and sizes 
Modern manufacturing conventions have resulted in a large number of sizes and standards.
Thermal performance (tog rating) 
Manufacturers rate the performance of their duvets in togs, a measurement of thermal insulation. This enables the purchaser to select a duvet appropriate to the season: the higher the tog rating, the warmer the duvet.
A few manufacturers have marketed combined duvet sets, one of approximately 4.5 tog and one of approximately 9.5 tog. The light-weight one is for summer and the medium one for autumn; snapped together, 14 togs is designed for winter.
In popular culture 
The term "duvet day" is used in some countries to describe an allowance of one or more days a year when employees can simply phone in and say that they are not coming in to work, even though they have no leave booked and are not ill. The provision of this benefit became fashionable in the late 1990s with many larger companies in the UK.
See also 
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- "Mina" (2002-02-05). "How to fit a Duvet Cover: The One-minute Guide". BBC.