Undergarment Materials

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Thalassamania

Diving Polymath
ScubaBoard Supporter
Messages
22,171
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Location
On a large pile of smokin' A'a, the most isolated
# of dives
5000 - ∞
Can anyone tell me (or even better direct me to an original source) how polar fleece and hollowfil work? Is it like down, trapping air as insulation or does the material insulate of it's own accord? Or both?
 

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