Using this Batman card holder is super easy. Just open the folding pouch and slip your cards into the two pockets. You can keep different types of cards organized, like your travel pass for daily commutes or your ID for identification. When it comes to maintenance, simply wipe it with a soft, dry cloth if it gets dirty. Avoid exposing it to sharp objects to prevent scratches on the PVC material. Also, don't put it in extremely high - temperature places as it may damage the pouch.