Hey, thanks for bringing that up. We can and should update our sizing chart to more accurately communicate our measuring methods. You are correct that we measure them by laying them flat and measuring the back waistband and multiplying that by two - this is the preferred method of measuring jean waists and is done quite commonly. As for your question on the button, the "3sixteen NYC" shank is from our most recent run. Let me know if we can be of any further help.
9/17/12 at 8:13pm