With a 30 inch waist and standing 5'11", I should have ordered a small tall instead of the medium tall. My wife says it makes me look like a hillbilly codger but she's the only one who ever sees it and it keeps me warm and doesn't expose my middle to cold weather. The flap on the back is strategically placed and it serves it's purpose well. I can't complain. It's not my first union suit long johns but it's as good as any I've ever had.