I made a smart key case using black cowhide leather. The key hardware is a screw-type, detachable design. I attached three key rings. The size of the smart key that fits is: 7cm (length) x 4cm (width) x 1.6cm (thickness). Folded key case size: 11cm (width) x 7.5cm (length) x 3cm (thickness) Important Notes: ✨ If you wish to ship to a different address, please change it before purchasing. Thank you for your understanding. No exchanges or cancellations are possible after purchase. Thank you for your understanding. Basically, immediate purchase is OK, but please refrain from doing so if the item is on hold. A sales commission is charged, so I do not issue receipts. I also sell on other sites. Thank you for your understanding. All of my works use genuine leather (cowhide). I like simple designs, and I create works that are a little cute (*^_^*) and easy to use, and that you won't get tired of, as the image comes to mind. I would be happy if those with the same sensibilities could empathize with me (*^_^*) This is a handmade product, so it does not have the perfection of a mass-produced product (^◇^;) Please understand that it has a unique charm that you won't find anywhere else. Although it is amateur work, I make it with care. Please understand that there may be scratches or slight stains on the leather during the production process. I do not smoke, but I have a cat. Please understand that there may be cat hair on the product. The photos may differ slightly from the actual color due to lighting conditions. Thank you for your understanding. If you are looking for a perfect product, please refrain from purchasing U^ェ^