The TMT Tactical Wallet can hold your money, sure. But it also has a compass, tweezers, a toothpick, a pen, a glass breaker and two hidden compartments inside. Oh, and it weighs nearly 0.2kg when empty.
Who has a use for such an item? Would it fit in any normal person's back pocket? And why not just carry around a Swiss Army Knife and a normal wallet? I do not know. But if you think this seems like a sensible product, it can be all yours for $US125.