I'm trying to remember those speed reading courses that advertised when I was a kid......remember the guy (or was it a gal?) was turning the pages at about 1 second intervals?
Wow, now that was amazing! 40 years later and I still remember those commercials.

Not advocating Polyester although it has its place. I own complete sets of Polyester, capilene, merino wool and silk. So far, and its just my opinion having actually tried all the materials, I like the underarmour  50/50 blend as it seems to somehow radiate the heat back while still being quite breathable. Its hard to explain unless you have actually tried it.

Not trying to nitpick but clarity is important to me.