“I have the Wilson standard chino in 4 of colours all the same size. They are a perfect fit. If you’re a 33” waist, get a 32”. There is stretch in the waistband. If you’re a 32” may be slightly roomier depending on colour of pant. The black and navy fit slightly smaller than the green and sand. This can occur in dark colour due to the dye which make the same fabric slightly more dense in feel.
By the way…from a construction POV…can you remove the contrast binding on the pant side seams…not really necessary BUT nice touch though. Makes the cuff role bulky looking when rolled.”