I think they fit true to size but were surprisingly slightly on the baggy side. (155lbs and 5'6 and always a size 8) Not necessarily in a bad way but if you're looking for something more fitted these might not be the pants. But great pants, super comfortable and would be great for all sorts of casual outdoor pursuits. They are lightweight, and move with you really well. They might not be great for anything super heavy duty (although it would be worth a try) or something I would rely on for backpacking but for pretty much everything else they seem pretty fantastic so far.