Using these sleeves is super easy. Just gently slide your cards into the sleeves one by one. When handling, make sure your hands are clean to avoid leaving fingerprints or dirt on the sleeves. To keep them in good condition, store them in a cool, dry place away from direct sunlight. Don't bend or fold the sleeves forcefully as it might damage them. If you notice any dust or debris on the sleeves, you can use a soft, dry cloth to gently wipe them clean. With proper use and care, these sleeves will protect your cards for a long time.