Down Comforters

As a rule, larger birds that live in colder climates have the largest down clusters with a corresponding higher fill power. Ducks and geese can both have high quality down because the age of the bird and the climate in different parts of the earth has an affect on quality.

The quality of the down that is used in bedding products such as down feather comforter is measured by its fill power. Fill power is the determined by how many cubic inches that is filled by one ounce of down.