Ultimate Guard Black Mini Card Case (60 Cards) Self-locking Self-locking lid for quick and easy card access; Keeps the case securely locked without Velcro or snap fastening Write-on strip Convenient two-line labeling strip that helps you keeping track of your cards and organizing your collection Acid free - No PVC This product is completely free of PVC and acidic materials and therefore ideal for collectible cards Durable rigid box The robust and durable material protects your cards during transport and keeps your collection safe during storage