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Un article de OUIes Ki.

Fluffy feather is a measure of the quality of the most commonly used method. Measurements need to take 1 ounce of down sample on the glass cylinder container, with the weight plate. Test requires a certain temperature and humidity, the sample must be processed in advance. In the other conditions being equal, high-loft down jacket made ​​of down (duvet or sleeping bags) fluffy lower than the same degree down warm down jacket manufactured lighter, easier to compress. Bulkiness is expressed as cubic inches per ounce (in ³ / oz) - fluffy 400-450 is a medium quality, bulkiness 500-550 is high quality, 550-750 is very high quality, bulkiness is more than 750 excellent.winerparka Bulkiness of more than 750 degrees with fluffy down 400 very large differences in almost all listed down the court you can buy all meat goose (or duck) by-product. To get down and raise a single goose (or duck) may be surprisingly high prices. Bulkiness down low which kept four months from the consumption of slaughtered geese (or ducks). These geese (or ducks) body hair will be carefully sorting, cleaning and mixed, but they do not like those mature as fluffy down. Bulkiness of more than 700 + down to from the very small number of breeding geese (or ducks). These geese (or ducks) in the spring molt. When their hair off, collected them by hand. Number of rare, of course, very expensive. Larger single velvet flowers, down more soft. Get such quality and the only way down is collected by hand, which is the main reason for its scarcity.winerparka