It has many card slots but the ones on the back of the ID window are thinner and don't fit the cards I have. You know, the same cards as everyone else. I understand wallet hacking, but it's not the same. It's too tight to fit things in without stretching the seams. This is a very high quality wallet so it didn't fit me. Excellent material can be a little thicker. So here it was. I ended up returning it and buying a very cheap wallet that worked for me. I cannot stress this enough, the quality of this wallet is truly amazing and you will probably love it. Everyone is different when it comes to things like wallets.
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