Using these sleeves is easy. Just gently slide your Yu - Gi - Oh! cards into them one by one. When shuffling, the lightly textured back of the sleeves will give you a smooth experience. For storage, you can put single - sleeved cards or double - sleeved cards in the cardboard box that comes with 60 sleeves. You can also personalize the box with the label on top. To keep these sleeves in good condition, avoid exposing them to sharp objects that could tear or scratch them. Also, store them in a cool, dry place to prevent any damage. Don't bend or fold the sleeves forcefully as this may cause the printed designs to crack.