This is the most comfortable bra ever.  As others have written, it probably does not have enough support for people who really need it, but it works fine for me as a B/C.  Although it is Nylon, it is really comfortable even down here in the steamy south in the middle of summer.  My only complaint is that it has rather a lot of coverage, which limits what I can wear with it.  The straps are quite thick and it comes up quite high on the chest and under the arms, so although it is a perfect summer weight bra, it is too big to be worn under most tank tops or low cut summer blouses.  Otherwise, I love it and plan to buy more.