I've wanted a belt for so long that I can get through the TSA with no problems. I finally found it. This harness is heavy duty with a well designed buckle that is identical (but smaller) to those used for scuba diving. When it snaps it holds great without slipping. If you're tired of an agent telling you to take your belt off (because there's some metal in the buckle) just so he can inspect it, this belt is for you. Four flights so far and I'm going through the scanner.