This card case features a ptarmigan, whose plumage changes color with the seasons, turning brown in summer and pure white in winter, depicted with a MARBLE SUD touch. This is a collaboration product with AYANOKOJI, a long-established clasp-fastener specialty store in Kyoto. Each one is carefully made by the hands of skilled artisans. Such a cute card case is sure to be a conversation starter. ・Size: 7.5cm (height) x 12cm (width) (Please note that there may be slight variations.)