The Ultra PRO deck boxes are made from acid-free, PVC-free materials and are designed to store and protect your collectible cards. These boxes are intended for collectible cards in sleeves of standard size or smaller. The deck box is a compact, cost-effective way to carry, organize, and store your decks with up to 80 double-sleeved cards. There is a space on the top of the box where you can label it with a permanent marker.