Using this Pokémon portfolio is super easy. Just open it up and start placing your standard-size Pokémon cards into the polypropylene pages. You can either put one card per slot for single-loading or two for double-loading. For your oversized Pokémon cards, use the special center pages. When it comes to maintenance, keep it away from direct sunlight and water to avoid damage to the cards and the portfolio. If it gets dirty, you can gently wipe it with a soft, dry cloth. And remember, this portfolio is for ages 6 and up, so make sure younger users handle it with care.