I actually like the material, it's that polyester stretchy smooth feel to it and fit snug. It was actually MUCH more low cut than in the photo. I would have to wear an undershirt on it. I'm top heavy though (H cup), and the shirt was very snug. So it is definitely a one size, but on my size it was just too low cut.  I  might have gone with it, but the back was higher cut and I was hoping for a lower cut back. Ironic I know!