I'm a big fan of micro-fiber for my modesty garments (underpants). I found some great ones at Target that are made in Isreal. The fabric is so incredibly comfortable and formfitting that I easily forget that I'm wearing anything under my kilt. And thankfully, they have no crotch slit that most American-style underwear (and yes, these are men's garments because they are definitely fitted for a man's anatomy). I just hate having that slit there for some reason.