Clear front & back. For cards measuring up to 41 mm x 63 mm (1 5/8" x 2 1/2"). A size typical for small cards in fine American board games like 'Twilight Imperium', 'Civilization' and 'Star Wars: X-Wing Miniatures Game'. The cardbox 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.