I have one of these in a pretty blue and I've used it as a basic running bra under tanks or what have you.  I got this one, in Flamingo, and it is such a cute color that I wear it alone when I am working out in my gym on the treadmill or doing High Intensity Interval Training (HIIT).  It is super supportive and nice because of the hook closure on the back you don't have to dislocate your shoulder to get out of it at the end of a sweaty workout.  Also, the straps are adjustable in the front with velcro- really good idea.  Moving Comfort has some pretty stodgy under things but this is not one of them.  It's supportive without being "too much". I'm getting more colors.  Oh, and it runs true to size: I am a full 34B and it's perfect.