I have already bought a very similar sleeve to hold my SD cards which I scroll through my trail cameras. It has a latch, no magnets, but I still had two issues that resulted in the need for a second case; There is not enough memory and there is no way to tell full from empty. This device gives me extra storage space as well as double the space for Micro SD/TF among SD cards. I'm a little nervous about the magnet versus the solid latch, but so far it seems to be holding up well. Also, it has a bonus that will come in handy the next time I need to pull a card out of my phone, which is a small pin tool to detach these types of card holders. You can hang it on the same key ring as the carabiner, so you always have it at hand.
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