Using this Pokémon 4 - Pocket Portfolio is easy. First, open the portfolio carefully. You can single - load your standard - size Pokémon cards into the pages to keep them well - spaced, or double - load them if you want to save space and store up to 80 cards. For your oversized Pokémon cards, place them in the special pages in the center of the portfolio. When handling the portfolio, make sure your hands are clean to avoid dirtying the acid - free, non - PVC pages. Store it in a cool, dry place to prevent any damage to the cards inside. Remember, the cards are not included, so add your own collection to make it complete. This portfolio is suitable for kids aged 6 and up, so adults can help younger kids use it properly.