I've been using this sticky gecko wallet as my only wallet for about 5 months now. I usually have 4 cards (credit card, debit card, license, school ID) and a Metrocard (which takes up almost no space). Also, I usually have a few folded bills that take up about 1/8 inch. So far everything is working fine. I didn't have much trouble stretching too much, except at the edge. retains its narrowness. Overall it was a good purchase and I will continue to use it. Edit 7/11/16: I had a little problem with this wallet. After more than a year of use, the bottom of the bag has started to fray right where I keep pushing up. It's not really a hit on this subject, and I'm not a shooting star. It's a material, so it will wear out over time. Just an info for those who are thinking about buying.
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