Worldwide, there's lots of different names for these: Comforter, Bedspread, Quilt, Coverlet or Eiderdown.  They add an extra layer to your bedding allowing you to snuggle down and keep cozy.  They are made of 100% polyester fabric, with a 3/4 inch (2cm) polyester filling, in a double square quilted pattern.  Check out the wide variety of designs.