Originally Posted by allgoo19
You don't have to buy one of those so called performance fabric to experience it. Just try regular dress shirt made of handkerchief material(the one you may already have in your drawer) in the hot day. You feel it cooler where it touches the sweat. And in the hot day, you can't separate sweating from its evaporation.
Material such as Underarmour works better because it makes more contact with the skin, while with dress shirt, excess sweat that didn't touch the fabric will drip down the body, doesnt' help by taking the body heat away.
If you don't believe it, you probably don't neet to try it.
Nope,you missed it on all counts.
Underarmour works to wick away moisture because of the material construction. It doesn't retain moisture. Cotton retains moisture. If you wear Underarmour only, then I would agree it would be fine for helping to keep you cool. But if you wear it as a layer under another garment then you create a vapor pressure barrier (although a mild one) that works to reduce the evaporation of sweat. It's not a matter of opinion or belief, it's scientific fact.