These bras are seriously amazing. Once you get it on and adjusted you can jump on a trampoline and the girls will not move at all! I purchased this for running but this size doesn’t fit me as well as my other smaller one so this one has never been worn. I have it in another size and I love it. It is great to be able to adjust the straps and band tightness on your own while it is on. SHEFit has their own sizing system so check out the sizing quiz on their website to see what size you are. This bra is a “1Luxe” size which can generally fit sized in the range of 36D-DD, 38 B - D, 40C.