Down Comforters

Fill power is a measure of the quality of down used as a standard in the industry. A way to tell the difference in high fill power versus low fill power is that to get the same warmth from say a goose down comforter, the high fill power down will weigh less and the low fill power down will weight more.

Conversely, another way to tell would be to take something made of down that both weigh the same and compare how warm it keeps you. The higher fill power would keep you warmer when compared to the lower fill power comforter.