After re-reading this thread by Ron I actually modded my own undergarmet from some old boxers. Gap boxers don't really have separate 'legs' in the back so it was easy to cut the seam and remove a little from the front and back and voila, it was a great kilt undergarmet! Not going to keep me any warmer, but it will definately help keep the kilt cleaner. Wishing I hadn't thrown out the old boxers where the crotch had 'blown' out!