The weight of down can add up significantly
Monday, December 21, 2009
Fill power can be a hard term to understand, so I will try to explain the amount of weight difference that would be associated with two products with the same loft. The down used in a goose down comforter with a 550 fill power would weigh up to 50% more than the down used in one with 800 fill power.
Warmth is provided by layers of air that separate a cold side from a warm side, whether it is down or some other form of insulation. When a thicker layer of air is trapped it will insulate more, which is called loft. The greater the loft the more it will insulate with less weight.