I used to always use the plastic London Underground Clipper card case as a leather-free card holder. I would take one a year. What I liked about it was that it had lots of pockets and was made out of very thin plastic that could hold a lot of cards. It's slightly larger but much stronger and can hold almost as many cards. So he delivers what he promises, and does it well. Ultimately, this is the low profile I was hoping for, with a god-like card-to-wallet weight ratio!
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