QAT Premium Card Sleeves are made with PVC and acid-free materials. Protect your valuable trading cards and collectible game cards from various elements during handling and storage. Approximately 100pcs per pack. 67x94mm - the usual size for penny sleeves.  Best for NBA cards and other sports cards 66x91mm - best for board games. 64.5x89mm - best used for storage of trading card games.  Not to be used as an inner sleeves.