I work in an unairconditioned warehouse doing manual labor and need a tee that can cope with a day of high heat, humidity, and a lot of movement.  This give'n'go is nearly perfect!

My favorite way to wear the give'n'go is under a cotton tee which allows the cotton to evaporate the sweat and keep me cool, but it keeps the cotton from sticking to my skin and prevents a heat rash in critical places (like the armpits). Perfect combination!

Because of the cost, I only have a couple that I hand wash in the sink after work to wear again the next day.

The sleeves are about 2 inches too long to be worn under the typical tee, but I fold them over and it seems to work just fine.  Fortunately the length is perfect for the typical tee and doesn't stick out the bottom.  The neck could be a little tighter but again it fits under a tee just fine.

I recommend getting your normal size, it is a close fit but that keeps the sweat off your skin.  They also fitted these with very large sleeves for some reason.  I have pretty large arms (I can't roll the sleeves up on button-down shirts) and the sleeves were STILL way too big!

1 star off for the odd cut of the sleeves.

Background:
I've tried every variety of athletic moisture wicking shirt and found that all of them make you very hot until you start sweating.  That's fine if you're only in a game for an hour, but it's a huge dehydration risk after several hours in the heat.

Nylon doesn't block body heat like polyester, so this shirt keeps you cool when you're not sweating (like cotton does) but keeps you dry when you ARE (very UNLIKE cotton.) It still gets wet with sweat, it just doesn't stick to your skin when it's wet.

Woven shirts don't stick to the skin either, but they don't do anything to protect the working man's armpits from heat rashes because of the way they're fitted.