The material of this bra is soft, very flexible and very thin. I was only a little disappointed, because if you put on just one of them you get with larger breasts very little maintenance. But two superimposed also support larger breasts quite good, nice shapes and are incredibly comfortable. Sports where one moves heavily, so I would not do it anyway, but otherwise ideal for lighter sports, leisure and home. I could well imagine to put on a to sleep or a proper sports bra for added support me.
In terms of size bras fit very well (I wear 80D, at Shirts M and M have ordered). If in doubt, you should rather choose my opinion, the smaller size. While the processing is not outstanding, but for the price ok.
The colors of this set are stronger than shown in the pictures, but very nice. Overall good price / performance ratio, I would buy again!