Clear front & back. For cards measuring up to 65 mm x 100mm (2 9/16" x 3 15/16"). This card size is mainly used in 7 Wonders, but also found in fine games like The Pursuit of Happiness, Coup and Cargo Noir. 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.