How do you think about down in terms of fill power?
Thursday, December 17, 2009
Fill power can be thought of in terms of cubic inches per ounce, so the bigger the volume of each ounce the higher the fill power number. A fill power of 400-450 is medium quality; 500-550 is good quality; 550-750 is very good quality; and over 750+ fill power is excellent quality.
All of the 750+ fill is from geese that are kept for breeding, while the 400 fills would come from four month old geese that are raised for consumption, with the down being the secondary product of these young birds. A good quality queen size Pacific Coast down comforter with a fill power of 650 and a good cotton cover with a 330 thread count could easily cost over $350.