As a runner who's ran a half in a NB top and also in the 17/18 shirt I can say the club tops are terrible. The "pro" ones that are £90 or whatever are probably better.
But the bog standard ones are awful
Yeah, even though I haven't run a marathon in any of mine, whenever I did gardening or whatever in my adidas footy tops it felt like I was wrapped up in plastic....which essentially I was!
All the adidas (and other manufacturer's) blurb about "shirt technology" and other such gumpf on the normal shirts seems like bollox to me!
It's always much more comfortable just wearing a cotton t-shirt!
I guess the main advantages of the footy shirts is that the material is more durable than cotton and doesn't get as heavy when wet.
But all this "it breathes" malarkey....? Give over...