The digicase is a rugged plastic memory card and battery case with a rubberised blue insert with areas designed to keep 4 aa batteries and the 6 way case in their place the included 6 way case is designed to safely and securely hold nearly every flash memory card currently on the market in one compact package holds any one of the following xd picture card memory stick secure digitalmmc compact flash type i smartmedia clear plastic see through surface lets you easily see