Abstract: A protective enclosure for a cartridge for holding a data storage medium (such as an optical disk) includes a mating cover and base connected to one another with a live hinge having an axis of rotation. The cover contains a lip which surrounds all or part of an enclosure space within the enclosure. The lip mates with a recess in the base to keep dust and debris out of the protective enclosure. Clasps which extend from the cover and base, respectively, mate with each other to maintain the enclosure closed. A number of protrusions extend into the enclosure space and make contact with a data storage cartridge, thereby holding the cartridge in a defined position within the enclosure.