Bought them half a year ago in San Francisco at Haight-Ashbury district (famous for the festivals oriented clothes stores).
I believe their waist size at largest is 40 but they have drawstring. My waist used to be 36 and they fit perfect with tighting the string down a bit.
I was preparing for burning man but lost weight and they're too big for me. Paid $100+tax so giving you $60 off what they cost me and save a trip to SF - $50.
Sorry for the pics composition, I've tried my best to hang them against white color background so you can see the color with better contrast.