Using the Double Deck Holder 200+ XL is a breeze. First, simply open the wide - opening lid, which is made possible by the Cobra Neck design. Then, place your double - sleeved cards in the removable inner deck holders. Each holder can take up to 100 double - sleeved cards. You can store two complete decks or up to 200 cards in total. Remember, this holder can also fit oversized cards. As for maintenance, keep it in a dry place to prevent damage. Wipe it gently with a soft cloth if it gets dirty. Be careful when handling the removable deck holders to avoid misplacing them.