This item was created by bonding two pieces of vegetable-tanned leather, approximately 2.5mm thick. Furthermore, the back side of the main part is lined, adding a touch of luxury. The color is a bright blue when new, but as it ages with use, it will develop a sheen and a more subdued color. It can be used with cards inserted for touch payments. Size: Approximately 10 x 6.5 cm x 5mm thick *Because thick and firm leather is used, it may be a bit tight at first. Please be careful when inserting and removing cards until the leather breaks in. Color: Blue系 (Blue-based) Material: Genuine leather Stains, tears, odors, etc.: None