UMD cases, made of transparent plastic, are perfect for storing PSP games. I used to take PSP games out of their original packaging and store them compactly in these. They can hold four discs, two on each side. They seem to open and close without any problems, but I bought them over 10 years ago. Cartridge case Software case - Type: UMD case - Material: Plastic - Color: Transparent Thank you for looking.