This is a flat card case where you can see the cards from the outside. One of the two pockets is made transparent. Put cards in the transparent pocket. Put money and receipts in the non-transparent pocket. Materials used: 　Cotton fabric 　Interfacing 　Soft vinyl I use a separate card case for each of my regular supermarkets. I no longer forget my cards, and I don't fumble at the register anymore. (Just me?)