Duvet Sizes

There is different sizes in a Comforter and they all go under different names:

Twin, Full, Queen, King, and Cal-King.

Comforter sizes run slightly larger than actual bed sizes to allow for draping over the sides of the bed. Typical sizes in the United States for comforters are:

• Twin = 64" Width x 87" Length
• Queen / Full = 87" Width x 87" Length
• King = 101" Width x 90" Length.

A comforter is sometimes covered with a duvet (comforter) cover for protection and prolonged use. The word Duvet is French for "Down". Comforter covers are like a big pillowcase for your comforter, usually closed with zippers or buttons.

United Kingdom has sizes only known as special types of padding duvet.

Comforters are typically packaged in a set that also includes a bed skirt, pillow shams, and sometimes pillows.

info from wikipedia