Of all insulations, down will give you the greatest warmth for the least weight. Each ounce of high quality down has about 2 million fluffy filaments that interlock and overlap to form a protective layer of still air that keeps warmth in and cold out.
When cared for properly (washed regularly and stored open in a cool, dry place), down will maintain its loft and insulation for a lifetime.
The many individual plumules of down allow it to mold to your body. Its high warmth to low weight ratio makes it easy to wear or sleep under, and its ability to wick away moisture and to breathe avoids the clamminess issues that are sometimes felt with synthetics.
Down is the by-product of a renewable resource, it is biodegradable and recyclable, it will last for decades, and it allows you to lower your thermostat.
Map of main down supply regions
of the down and feathers used globally is produced in Asia
of the down and feathers is from ducks
Less than 10%
of the value of the bird is from down and feathers
Down comes from the regions where ducks and geese are popular for eating
Collector based farms are mostly in Eastern Europe
The main users of down are North America and Europe
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