I ordered this bra and the Moving Comfort Fiona bra. I am a small B.  While both bras appear very well made, comfortable, well priced, and are attractive, they are not in any way high impact!! I wanted to use them for running but even with the A-cup size bra, my girls were still moving around even at a slow jog which is distracting, and uncomfortable.  I like things to be completely move-free which shouldn't be that difficult to achieve with an A/B cup size. Very disappointed, and will be returning both.  Back to the old school uni-boob compression style.