I have never had good luck with sizing on officially licensed Phish T-shirts. This one rates pretty well. My main issues with officially licensed phish tees is that the torso is always way too long and the material isn't very soft. The material on this tee is decent but again...the torso is too long. I always buy a large tee and the seams on the shoulders line up perfectly but the torso length goes way past my waist and even past the start of my inseam. It just looks really weird to have a t-shirt that long. I even tried to dry the shirt on high heat but it didn't shrink the torso length up enough. I'll prolly end up taking the shirt to my local tailor who shortens up all of my official phish tees by about 2"-3" for $7 and then the shirt fits properly. After the alteration it sits about 2" below the waist of my pants.