This is a card holder for all kinds of playing cards or a hueforge, in this case a created one complety from scratsch because my son hase these bigger and thikker card sleeves (and i did not really like most of the card holders that where already online). Besides pokemon cards all other playing cards will fit as well. If you are planning to use it for a hueforge then just simply scale it up to the desired size in Bambu Studio!