Using the Bastion 50+ XL deck box is easy. First, open the box using the click - lock mechanism. Then, carefully place your double - sleeved cards inside. You can use it for decks with 50 or more cards in closable inner sleeves, or 55 or more in standard inner sleeves. When you're done, just close the box and the click - lock will keep your cards safe. As for maintenance, you can wipe the box with a soft, dry cloth to keep it clean. Try to avoid exposing it to extreme temperatures or rough handling, as this could damage the box or the click - lock mechanism. Also, be gentle when converting the two symmetrical parts into a card pile and discard pile holder to prevent any breakage.