They used to say on their site how they wanted it done. They said take a pair of your best fitting pants, button the top button and measure across and multiply X 2. Then measure the inseam from crotch to cuff where you want it. I have since looked on their site and that info I cannot find. I did it according to their instructions and their pants fit me perfect (then). They did not shrink after washing.
By the way, I have 2 pairs 32X29 that I have outgrown, they don't guarantee that. Any one is welcome to them for shipping as I have up-graded to 36X29.
Mike
Last edited by Gmike; 02/18/2018 10:24 PM.