Definitely a good bra for running or jumping activities. I got very little bounce in this bra which is what I wanted. The only down sides are that it does take some contortionist work to get the thing on, and once it's on, I feel like I cant expand my chest completely to get a deep breath which is a big problem when running for me, as I control my breathing with long deep breaths. It seemed to relax a little after a few weeks use. I kind of wish I'd gone one size bigger to see if that helped the squeezing issue, but I'm afraid it would be too loose and would slip or allow bouncing. Over all I do like this bra, despite the quirkiness.