SLC/NYC Unless one lives in a self-contained bubble, thinks like one -or maybe-is running for public office, there's no denying climate change. It's why it is SOP that tech materials' trick out performance -outdoor footwear and apparel for wearers' comfort in all kinds of weather...multi-tasking for Spring like Decembers and winter like Springs. There are many textile companies with measurable thermo-regulating products-aimed at keeping wearers cooler -or warmer-by getting rid of the wet/sweat-helping to maintain real comfort when active or at rest. FYI: The ideal body temp of 37.5Cº happens to be the descriptive name of a Colorado based company-who has a patented tech that works to - enhance fabrics by capturing and releasing moisture vapors away from fabrics-via active particles permanently embedded in the yarn captures heat from the body's infrared energy to speed evaporation, cool itself...and dry faster too.