I ONLY sweat under my armpits. It does not matter if its 10 degrees outside or if I'm in the driest place on Earth my pits will always be super saturated. It's really frustrating that if I am doing anything in public, then it is supersoak time.
I ordered the shirt as a last ditch effort, subconsciously KNOWING it would not work for me because I sweat A LOT. I received the package very fast in fact, a few days earlier than expected. When I opened it I was shocked at how thick and dare I say: Diapery the hydro-shield was. I felt let down because during inspection, it looked like a thick piece of cotton that you can see through. And we all know that no amount of cotton can stop our sweaty armpits.
Later that night, when my wife and I had to go to Wal-Mart, I curiously slipped on the Thompson Tee and wore a lime green shirt over it. But I wanted to put it to the test. I checked my pits every ten minutes or so and nothing at all every time.It did not make and detectable noise for me to hear. And it felt like a warm towel under my armpits because it absorbed the sweat really well. The shirt manufacturer states that the sweat absorbed will evaporate with the natural bellow-like movement your arms create when moving them. I am so happy for whole trip without sweat marks on my outer shirt! I turned the shirt inside out and allowed the shirt to dry so I could use it the next day.