Thanks, this is helpful. I'm 5'10" tall, and wear pants with a 30" inseam. (Waist has gone done from 44 ugh to 40 and closing in on 38 woohoo).

Looks like I should be looking at Medium or Large. This is helpful when I can get the size from the Craigslist crowd, so I won't waste my time looking too small or too big. I can at least check the mediums or larges with a good chance they will work.