I'm 5'9, 160 lbs. I wear size medium in most clothing and these are no exception. I now have 6 pairs and would buy more if I could find them but the only complaint I have is availability and colors. Why only Janji has figured out the dual liner drop-in pockets is beyond me, but I can use a full size (6.7" cell phone in case) without it bouncing or protruding, bring keys/lip balm, etc. and feel entirely unencumbered during a long run. Fit is spot on - not too tight, not too loose. Liner doesn't chafe unless it's 80+% humidity and a 10+ mile run, where you want to use a skin lubricant, anyway (no short is immune). Not too tight, not too loose. They really do dry quickly and they retain their shape after dozens of washes/machine drys. No polyester stink. I've tried many others and looked to many others. These are the only shorts I'll buy for the gym, running, or even hiking. Please, never stop making them.