I am a 30f and the only sports bra that has ever worked for me for running is the Panache Shock Absorber. However, that one tends to make me look a little flattened. I decided to try this model, and while it’s not as supportive, it makes my me look a million times better. The underwire is stable and comfortable, and keeps my breasts up high and round so they look cute under my tanks and not droopy. The idea of the clip in the back is awesome, because most of my workout tops are racer-back. However, the straps do not adjust long enough to use the clip without it being uncomfortably tight, which you can even see in the photo. The poor model looks like her back is being pinched together, and that’s how I felt. I actually used a paperclip as a makeshift extender, which worked surprisingly well, but would look a little absurd in tops that don’t cover it. If the strap issue was worked out, this bra might have been more supportive. That said, I still love it for lifting, yoga, and less jumpy-runny activities.