I bought this bra as I already have two Shock Absorber bras, both of which fit well and are comfortable. Sadly, I followed the advice given by Bravissimo on the selling page for this bra, and went up a back size. This was a big mistake. When I first tried it on at home it looked ok and was comfortable so decided to keep it. However, after my first Zumba class I realised I had made a mistake. It doesn't support my boobs at all - they bounce all over the place, which is very painful at certain times of the month. I persevered with it, thinking it might fit better after I washed it, but sadly no. I went for a run in it and all I could hear was the sound of my boobs clapping together. It would have been funny if it wasn't so painful. I obviously can't return this bra, so will keep it for yoga classes only. I had just wished I'd bought it in my normal size as my other two Shock Absorber bras are great and are still a good fit and comfortable despite being 5 years old. I love all the items I have bought from Bravissimo except for this bra. I will continue to purchase from Bravissimo, but I do think they need to rethink the sizing advice with this particular bra.