Purchased this bra a couple of weeks ago and have taken it on a few 5k runs so far. It has been awesome and is the sports bra I reach for first. I will be purchasing another so that I have one when the other is in the wash.
For reference, I am 5'7", 165lb, size 34DD with a breast shape that is shallower on top, fuller on the bottom. I purchased a size medium. I had a breast reduction (used to be a 34H) that obviously left scars. One thing that is really nice with this bra is that it does not irritate those scars. I've used Shefit sports bras for a long while but by the time I get back from a run, my scars are sensitive to the touch (burning!) because of the fabric and seams. This one is way more comfortable. I also appreciate how moisture wicking it is - I sweat a *lot* on runs in the summer and I am impressed at how this bra holds up to that. I feel like it keeps me supported without constraining me too much. Definitely recommend trying it out, just make sure you get the right size. :)