According to our fit team this item is running true to size.
I would say it's a slim fit. I'm 5'2" and 113# and athletic build. It fits just right across the shoulders and has a little room in the body, but not baggy at all. The sleeves are most fitted at the wrist and have a little room throughout, but might be snug on others. I'll definitely be washing it in cold and hanging to dry since I don't want it any smaller.