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ab,
They were in a climate lab using ergometers. The temp was 5c (41F) with a sustained 2 mph wind. They did two 7 MET heating cycles and 2 cool down cycles per test. The only variable was the knit types. The material types were polypropylene for all knits. This test was for all common knits in use during the 90's. Fishnet did the best job of skin surface moisture handling but the core temp curve was the same for all knits at the same point in the test cycle.
Current technology testing generally shows that Power Dry High Efficiency is the best moisture management base layer material. I am trying to stay out of trouble and so I won't mention the worst garment type for holding moisture. I will give you a hint though; it is a material problem rather than a knit problem; and Natick Labs expressly prohibits its use in any ensemble layer.
My original post on this thread was only meant to clarify that underwear per se merely occupies a portion of the still air layer, and, therefore, the nature of underwear has little to do with the over-all thermal insulation, although these results may be independent of subjective comfort.
Edited by richard295 on 11/25/2012 07:52:35 MST.
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