This case appears to be made of durable, thick plastic with two clasps on the long side. Holds 34 SD cards as they state, no micro cards. On the outside is a top and bottom layer of dense foam with about 1 inch of rubber-like foam holding the cards in place. They are arranged in two rows of 17 each. Each slot is spaced far enough apart to make choosing a card easier. Individual cards protrude about 1/2 inch from the foam, making them easier to grab. The zippers keep it securely closed. I use a lot of cards in 3D printing and web photography so it was great to keep a reasonable number of cards and not get lost. I liked it so much that I immediately ordered a second one.
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