Travelsmith has pretty nice money belts, holds plenty of $100's and look good. The hardware is plastic so it doesn't set the metal detector off, I'm now a "known traveler" so I don't remove the belt anyway so that's not an issue but back in the day I went thru with my shirt out and belt on with no issue. I took 2 belts, one in the carryon in a pair of shorts so the plastic zipper was not visible and was ready to go once on island and the other in the jeans I was wearing, 3K in cash, no problem.