How can smoothness be a deterrent, you ask. I carry my wallet in my back pocket and I wear Levi every day. Levi's seem to be made for small foldable bills (what most people mistakenly call wallets). A slick wallet (something that doesn't require folded paper money) in my circumstances tends to work on its own when I'm seated. Found it on the floor after getting up and out of the cafe chair. For those who carry their wallet in a deeper pocket (like a jacket) this shouldn't be a problem. Maybe I just have an unusual physique. Well-designed wallet features. I'll be looking for something exactly the same, maybe with a woven outer surface. YMMV
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