micoach is all you need to get the results you want.
I was so crushed! I had bought the old model of this jersey (without thumbholes) and it was hands down the best fitting and most comfortable running shirt I ever bought. Ive had one for two years and worn it constantly. I spoke to an adidas rep to try and find the closest replacement and I was pointed me to this new edition. Its noticeably smaller in the torso, the sleeves are shorter despite the addition of thumbholes (which mean the sleeves need to be longer), the adidas logo has lower quality "paint" and is less reflective, and the collar bunches and was re-designed. So bummed. The fabric is even thinner which may be a change in climalite, but I think it just feels cheaper and holds its shape less well. I wish I had bought 20 of the old model and worn them happily ever after.
I ordered a medium, the fit is just right. I'm 178cm and 75kg. I'm not bulk, but in okay shape. The fit is snug, not constricting. So after two weeks on wear, on and off, and I find a couple of runs in the sleeve. I thing it was from carrying something that wasn't smooth. Bit disappointed really. I certainly won't be picking up the cat while wearing this. Overall I like the top, the look and the fit, just sad the material lets it down.
I've used mine for a while now and its pretty good. Material quality is very good, no itching or rubbing so far. I am 5.8" and size small fit is decent, but I wish it to be just a bit shorter in sleeve and hem length.
I'am 5 45, 160lbs. I usually wear slim-fit medium shirts and pants from both adidas performance, and originals. If you want a slim-fit/muscle-fit, buy a small size, which is what I did and still comfortable. But if you want some more room and does not care about the shape of your body, but a medium.