Great concept and basically what I'm looking for but with a few flaws. I've noticed that some others have mentioned the same thing, and I agree that metal wears out my cards quickly over time. I think it would be ideal if there was a thin piece of felt or microfiber-like material inside to not only make card removal/insertion easier, but also reduce wear and tear on the cards. Another downside is that it's quite difficult to fit the cards between two pieces of metal, which is understandable (since you don't want anything falling out), but something to help separate the two pieces would be nice. I think this second downside could be overcome by adding some soft fabric. In general, I recommend a good wallet. I'll probably get something to sit between them to get through this.
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