Im a solid guy 6 230 And usually wear a 36 to 38 more often a 38. I purchased two pairs of these at the same time in blue and Olive. I went out on a limb and actually purchased my usual pant size 38 and they fit as expected. Keep in mind these are slim tapered they will fit through the waist, but will be a little snug in the derrire and thigh. Due to the wonderful magic of stretch material they are extremely comfortable and soft. If you carry a lot of things in your pockets I would suggest a different fit. While these to allow for a slim wallet in the front and perhaps a pocket knife, don't expect to fit a lot of other items.