I just recieved my first SWK Standard in the mail, and it's a size 38, and I'm a pants size 36. Now judging how it fits I probably coulda gone with a 36 in the kilt, but the buckles fit great at the tighest or second tightest holes, which would give me plenty of room to put on shirts under it or something, so I think maybe going a size bigger in an SWK wouldn't kill ya, it would probably work out swimmingly.