I have three of the apparently now defunct underkilt dealies. I almost always wear them with my wool kilts. They're black so don't worry much about them showing. If they did I wouldn't be embarrassed. As the bullfighter said, "EVERYTHING I wear is masculine."

When at work I choose to wear tartan cotton boxers from WalMart - just in case - and over the past 18 months of full time kilt wearing there have been three times where I've been glad I did.

Part of kilt comfort is whatever YOU wanna do to get comfy.

Ron