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A lot of the cooling effect of sweat comes from evaporation so it is debatable whether wicking vs non wicking is better in hot dry conditions. Having said that in very hot and low humidity environments it may be a moot point. One area where it may make a difference is if you are wearing a large pack, in this case sweat can build up under the straps and ...


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It is also worth mentioning that there are other ways to obtain absolute position references by using astronomical observations. Most of these are centuries old and of course, are not anywhere near as convenient and in most cases not as accurate a GPS however they do have the advantage that they don't depend on electronics or batteries to work. The modern ...



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