I am a boxing/ fitness instructor and I am a 38DD. I have literally been looking for quality, HIGH IMPACT sports bras that can hold me in and also maintain comfort. THIS BRA IS IT!!!! I just ordered 4 more. I tried it out last night - running, jumping rope, box jumps, etc. Everything stayed put, it was breathable and was comfortable. Look no further. If you are large-breasted and need a quality sports-bra, this is it! It is a little difficult to put on, but totally worth the benefits.