I originally bought one of these from an airport kiosk to replace a stolen wallet because it was flimsy, cheap and held cards in a way that they wouldn't fall out. That last feature has become more important lately as I now carry ridiculously heavy "metal" and perfectly smooth cards that tend to slip out of traditional wallets. Basically, the open side of the card slots points inwards towards the fold of the wallet so that they cannot slip out. After about a year they start to wear out and now I'm using the second one. I just bought two more in case they stop making them. By the way, the provider SpaceBound seems to be very good.
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