[ Multi-SD card case slots ]: 12 SD card holder case slots for SD SDHC SDXC Cards + 12 Micro SD case slos for Micro SD TF cards. 24 slots in total. | [ Shock-proof memory card holder ]: Due to the TPU-plastic & Snap-on locking slot, the SD card wallet snugly keeps cards in place safety, easy in & out. | [ Waterproof SD card storage ]: High-quality seal strip secures cards in the box from water, dust, debris. | [ Compact & Portable ]: Memory card case size:6*3*1in, 5 ounces. Easy carrying by simply slipping into camera bag. | [ Snap-on locking system ]: Micro sd card holder features a very durable hinge mechanism for longer life span.