Some wallets are longer, that is, if you put them in your pocket, some of them will be exposed (for example, in jeans). Isn't that very unsafe?

I'm sorry that this long wallet doesn't match jeans. This is in the pocket of a suit. Watching foreign movies is often seen, in fact, mainly for putting cards and important bills. As for money, generally put a little money, and you can't make the suit jacket look bulging. If there is a style, it is held by a personal assistant.