Using these sleeves is easy. Just take a card and gently slide it into one of the sleeves. It's a great way to protect your valuable Altered® or other TCG and LCG cards. When handling the sleeved cards, make sure to do it with clean hands to avoid getting dirt or oils on them. If the sleeves get dirty, you can use a soft, dry cloth to gently wipe them. Store the sleeved cards in a cool, dry place to keep them in good condition. Don't bend or fold the sleeves as it might damage them and the cards inside. Also, when shuffling, be gentle to ensure the long - lasting performance of the sleeves.