I usually wear XS or S and have my Top in S ordered in this case, because I would have to train especially in summer prefer a little further and airy. It turns out as a regular S. I especially like that it has a high stretch content and also on the belly a little looser (it would as XS), but without adding bulk or disturb. Furthermore, it is also slightly longer cut and rich on hip, but without causing an unsightly "dress" effect.
The high-quality breathable fabric, the shirt dries very quickly and there are contrary to my fears, even with very intense exercise no unsightly sweat stains.
Only negative is the fairly wide but cut. Of course, you still wear while training a sports bra, which is the interface also produces the same as a Wettkampfoberteil- nevertheless sometimes it's a little "frank" when the top from sliding forward. With me at the Athletics but that's irrelevant, hence the full 5 stars.
Strong buy recommendation for those who are looking for a comfortable and functional sports top and have no problem with a slightly deeper cut. Qualitatively, the top is still great and the price-performance ratio is definitely true.