For cards measuring up to 41 x 63mm (15/8 x 21/2”). A size typical for small cards in fine American board games like ‘Twillight Imperium', ‘Civilization' and ‘Star Wars: X-Wing Miniatures Game'. The card box safely stores 50+ sleeved cards, and doubles as a card holder during play. Just flip back the lid and lock it in place! Contains 50 clear card sleeves in 80µ polypropylene, with a soft non-reflective matte treatment. No acid. No PVC.