IMO the synthetics may work for guys in generally cooler climates, even in their 'hot' season. But in the muggy South they feel like you're wearing a plastic bag. They are sticky and don't breathe well at all compared to cotton. You're going to sweat regardless of what pants you're wearing but cotton still breathes once it's wet. The tech pants' lack of porosity really shows itself when they become drenched with sweat.
I've tried many times wearing synthetics over the years and always go back to cotton. I won't wear a hat, either. Hats block airflow around your head and cook your brain.
Regarding synthetic shirts, I was made a believer this week. I always wear cotton in the summer unless it's raining, then I'd wear synthetic, which seems warmer and better than cotton, in the rain. It never occurred to me to wear them in high heat and humidity, because of the warmth factor they provide in a chilly rain. But working lately in drenched cotton tee shirts, even when it's just humid out but not terribly hot, was getting old and draining (ha) on me. So I tried one of my synthetic tees (Hanes Cool/Dry) and it was like a night and day difference



Maybe I should try me some synthetic pants.......
