The skivvies are graded like regular underwear. No special grading. You would wear your normal fruit of the looms , calvin kleins, or whatever .Below is a rough idea. I have sold hundreds of pairs. I am sure people can chime in besides saying they are comfortable.XS27-29Small29-31Med32-34Large34-36XL38-40I will get a size chart up.
3/28/15 at 7:54am