Great fit - very comfortable!
When I bought this top, I was juggling between going for the small or the extra small ( I am about 5'2m 120 lbs). I tried on both, and they both fit well. The small was a little looser, but was also a little longer on me. I decided to go with the extra small, and I'm very happy with it! The larger one would probably be slightly better for backpacking since it was cut longer, but most of my hiking pants a cut higher anyway, and the extra small was a little more flattering