I love these little tops. I wear mine personally for Crossfit. First time with this brand, and I would say that the sizing feels slightly small - just low cut - so found myself looking a little bustier than I prefer (which is challenging seeing as I am XS).
The fabric is fairly stretchy - therefore leading to less support than other brands at this price range. I'll just wear this for yoga or barbell work and less on the runs!
Love a good back design though and this doesn't disappoint!