I am very surprised with the fit of this bra. I am a 34-36 B, and according to the size chart, I should have ordered a M or L. I wanted a tighter, more compressing fit, so I took a chance and purchased a S. Boy, am I glad I did. It actually fits perfectly, a bit larger than expected, really, because it's not very compressing. This is more of a mid-impact bra, which is good enough for those of us who aren't large chested. I was expecting it to be so tight to the point of suffocation, but the bottom band is perfect, and I'm actually not strapped down as tight as I wanted to be. Still, I wore it during my workout last night and it was comfortable, and there wasn't too much movement since I have a smaller breast size, so supportive enough for me. I read tons of reviews stating to size up, but I wouldn't, or else you won't get a very supportive fit. I love that this bra comes in so many great colors. I got the Volt/Dusty Grey to match my Nike Free Transform Flyknits (also purchased here on Amazon). Great quality, very comfortable, awesome, smooth material, but I wouldn't go so far as to consider this a compression sports bra.