I usually wear a 34x30. After reading the reviews I figured going up to a 38 would be a safe bet.  So I ordered 3 pairs of pants 2 sizes bigger.  One pair was tight on me when I wore them,  the second fit my waist but doesn't have any room for the important pieces when I sit down,  and I couldn't even button the 3rd. This was before I even washed them.  These were pants that are 2 sizes above what I normally comfortably wear.