Must be something with the lined kilt.

I have three Pittsburgh Kilts, the desert MARPAT, the forest MARPAT, and a custom tri-color (check it out in the PK gallery or my gallery), all three have a muslin type white cloth in the inside back of the kilt that hangs from the waist about 8 to 10" down, heck, maybe a bit more...sorta like having some sewn in underwear on the back inside of the kilt.

I'm 60, and getting to the age where something like that could be an important feature

Ron