I'm 5'8.5"
155lbs

I got this in a small it actually fit well for the most part, not too tight and not too loose. I don't really like it because it is a little thin for my taste. It's thinner than most T-shirts and probably the same thinness as most cheap T-shirts. The main issue for me is how short it is. Fresh out of the bag and without washing it barely covers my belt. BARELY. If I reach my arms or elbows up it can definitely show my stomach. A little too short for my taste.