SD Card Organiser Standard Credit Card Size Secure Digital Memory Card Case (Purple) the only creditcard sized SDcard holder of its kind! Never lose your SD card again! Get The World's Best SD Card Holder. This Credit card sized SD Card case alternative is the best available on the market. Available in Purple, Yellow, or Blue (separate Amazon listings) See also SDcardholders for Micro SD cards, Multi SIM and DS Gamepac for Ninento games