Our brand new running shirt is straight out of Awesometown! It's a fully sublimated T made of a 120 GSM super breathable fabric. We designed this with the softest fabric we could find and actually looked at premium bike jerseys to find the proper fabric. The focal point is stretch, maximum breathability, and of course comfort. 
The unisex sizing chart is in the pics and these are pretty spot on true to size. If you prefer a snug fit, then size down, but otherwise order your true to size and you should be all set. Ladies we suggest scaling down your size 2 to 2.5 times normal. So if you normally where a size Medium, then an XS or XXS would fit perfect depending on a snug fit or more roomy fit.
As a side note, this worked great for the Hawk 100 this year, even despite soaking it many times with ice cold water it dried out within minutes! 
Material, 92% Polyester / 8% Elastane. 120gsm
Sizing: These run very true to size. 
UPF25+
Made in China