I'm 5'7" 160, I usually wear between a 32-34" waist. The mediums fit me great, I liked the tapered legs and didn't have any trouble getting them over my Danner Pronghorns, but I am not a huge legged guy either. I wore them for early archery with the temps in the 90's and for our early muzzleloader season with a thin baselayer underneath them. I thought these were the best hunting pants I have worn. They stretched awesome and never bound up when stepping up high over brush or logs. Mine have been very durable, I cut my inner thigh pretty good stepping over a tree that had a sharp branch sticking out that I didn't see. I was bleeding, but the pants didn't show a single frayed fiber. They are breathable and quiet enough to get in bow range on elk. My only complaint is that I think they forgot the DWR on mine, as wet moss soaked straight into my rear when I sat on a log. They dried quickly, but the cotton underwear didn't! I like them so much I actually bought a second pair. I also have a pair of Kuiu Attacks and like them a lot, but I have lost about 50 pounds since I bought them and they are just way to big on me now.