They fit snug. 6'/slim here, my L tee in hunter green does not hang below my waistline and it comfortably hugs the body without ever actually being TOO tight. My shirt is from a previous drop, so I'm hoping that the ones recently released haven't changed too much, because I really love how comfortable this shirt is.
shit...I'm like 6'1 160...does this mean XL for length? I hate shirts that are too short..
I own one of their henleys in XL and the length is noticeable longer (a bit below waistline, nothing too outrageous), but perhaps the worst part is that the shirt might actually be a bit too baggy (wide) for me. If you're worried about the shirt fitting too small, it'd probably be best to size up, especially because the shirts do shrink from my experiences, but just note that they might fit a little loose, especially if you're on the skinny side.