In various countries in asia the cross-body small bag is wildly popular, probably because everyone's always carrying phone batteries and umbrellas and a bunch of other random stuff. It wears like a sort of tight-to-the-body pocket-on-a-strap. Really, really convenient, but every time I tried it as an enormously wide white dude in a Hawaiian shirt I don't think I pull it off lol. I think it's more of a streetwear look. Keeps your pockets nice and slim.