I have several of these and they do exactly what they promise; protect my SD and microSD cards when they're not installed in a camera. I travel full-time for work and even when I am home I often ship my camera kits around to different filming sites. We are yet to damage one of these cases or the cards inside of it. The other thing I have noticed is that even without a strap to hold the cards they do not shift around at all during transport. The little rubber card slots are sized perfectly to hold them securely without making them difficult to remove when needed.
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