There's enough fabric to let them out quite a bit (Ben, can you confirm how much?)I have a 36R Classico II with 30-inch trousers. I had the tailor let them out at least 1 inch without a problem. If I had sized up to a 32 inch trouser and had the tailor take the waist in an inch, I fear the seat and legs would have been too baggy for my taste. If I went with a 38R to get a 32 inch toruser, then the jacket would have been much too big as well.I'm 5 foot 11 inches, 160 lbs.