For cards measuring up to 70X70mm (23/4 x 23/4"). This card size became popular in the €˜Power Grid'/'Funkenschlag' game family, but are also found in many other games like the various €˜Catan Card Games' and the €˜King of Tokyo' expansions. 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.