I am 5-10, 180 lbs. I usually wear size 33 waist pants (eg: Eddie Bauer jeans). Sometimes 32s. The medium in this product was too small for me (the waist was big enough - it's a drawstring waist - but the overall fit was clearly too small), and my proportions are pretty average. I think I'm going to try to exchange it for the large in the same product.
Jim - 10/26/2013