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sleeping bags
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Version
1.0
http://www.bagssleeping.us - Down-the filamentous and
fluffy layer underneath the feathers. Positives: All
being equal down is warmer, lighter, more comfortable,
compresses smaller, and can last a lifetime if cared
for properly. Goose down is the standard others are
compared to. The more it lofts the better it
insulates. This is known as fill-power, the higher the
number the better it retains heat.
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