It is thin and light, so it is portable by attaching a D-ring ring to a card wallet to increase utilization. You can use it comfortably and beautifully by attaching a necklace strap or leather strap of Properbillings. You can wear a key ring or small belongings that you use every day, or you can wear it without anything on it.It is a vertical wallet that stores cards deeply, and the back design is divided into two types. Please select the type according to your usage habits and needs.*The D-ring is designed to hang somewhere and hold the card tightly so that it does not come out easily due to the nature of the wallet that will be used. It may feel very stiff in the early stages of use, but due to the nature of natural cowhide, it is easy to put in and take out naturally. **This product is exclusively for card storage without banknote pockets. If you need to collect bills, Flat Card HolderPlease take a look at .