Our running singlet is straight out of Awesometown!
It's a fully sublimated singlet 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 back is cut in further than a normal singlet and the extra breathability you get from that is exceptional. 
 
The men's and women's sizing is 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.  
Material, 92% Polyester / 8% Elastane. 120gsm