I got this to protect against RFID scanners stealing numbers. In that regard, it works very well. It's aluminum lined with carbon fiber so it's pretty durable. So far the only issues I've noticed are that it's difficult to get just one card at a time. The money clip on the side is also a little loose and I need to check to see if I've lost any money. It's a great pocket clip so I don't have to reach to the bottom of my bag. In general I like it.
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