You are what you (sw)eat.
I bought a pair of Tech pants last August at ITCC. I figure I have worn those pants 70% of the work time here in Dallas (AW mediums in the winter weeks and the rare day in shorts otherwise). They are usually soaked with sweat by 8AM and dry at break and lunch. Sort of strange to sweat up clothing several times a day.
That means they've been washed over 150 times, too. Yes, there's half a dozen picks where the handsaw tagged them where I'd thought there might be a lot bigger gash. They have held up well do not look like any other piece of clothing run that hard.
Wearing sweat wicking light wool socks also maintain a balance of coolness. Our work uniform tshirts are 40/60 cotton/poly and are really what tips the balance. I get a little static for wearing 80/20 tshirts that billboard something arbo because they are cooler.
Now, how about some Tech Tees?