This Gamegenic Dungeon is a great card storage solution. To use it, simply remove the cover by unclipping it from the bottom. You can then start filling it with your double - sleeved cards, deck boxes, playmats, and other accessories. When you're done, clip the cover back on and use the magnets and locking mechanism to secure it. As for maintenance, use a soft cloth to clean the Nexofyber+ surface and microfiber lining. Avoid exposing it to extreme temperatures or sharp objects. If you shake the box, make sure the locking mechanism is properly engaged to prevent items from falling out.