I ordered a large, i am 54 150 lbs. It fit perfect! I tried to go the cheaper route from a different seller, do NOT do that. This seller and brand is quality! Its long enough to cover an inch or two under your bottoms ( so if you forgot to trim down there, you don't need to panic) the favric is heavy ( not cheap and thin) i don't know what to say otherwise than its perfect and i may buy different colors. But like i said go with this brand and this seller