No offense, Slack, but you seem like a small anyway in W+H sizing. I think you sized incorrectly right from the start. This dude above should go with a large, especially if he weighs anything near normal for his size. Shoulders and length would be killer otherwise, not even touching the pit to pit thing which may accommodate, albeit awkwardly in a medium. I'm 5'8", 160 lbs, and wear a medium in W+H, and in some pieces I could definitely size up for a large. I'm athletically built too. Hope that provides some insight.