Carbonfiberboy 

Firms which cater to the performance crowd like Pactimo for instance. Pockets add weight, limit evaporation, and catch wind, don't you know? I have a jersey where it's hard to get 3 fingers in the pockets. Skin tight, man, just like in all those product photos of the Beautiful People. I can only wear it in my thin phase. Wonderful jersey though. I wear it on hot event rides, where it's the almost perfect thing. I usually put a Camelbak over it. - decreases wind resistance enough that they're UCI banned. Every little advantage, that's what I say. They used to shove sponges down their jersey backs. Maybe that's illegal now too.