Handmade keyholder made with domestic, moss green oil-tanned leather (single piece of cowhide). We've obtained soft, supple, high-quality leather. This is oil-tanned leather, also known as "oil nume," which is rich in oil and relatively water-resistant. The color is a unique, deep moss green, making it a very attractive leather. Limited quantity available. After making numerous prototypes and refining the size and design down to the millimeter, we've achieved a minimalist and simple design. Something that seems like it doesn't exist. Simple yet impactful. That's the concept behind this product. Perfect for small keys like bicycle keys, motorcycle keys, locker keys, and desk keys. Of course, it can also be used for car keys. We've also paid attention to the size of the key ring, using the smallest possible ring, assuming only one key will be attached. This leather develops character the more you use it, but due to the natural nature of the oil-tanned leather, there may be wrinkles (called "tra") and minor scratches. While popular in Europe and America, more and more people in Japan are appreciating these as unique characteristics. 【Size】 Length: Approximately 5.5cm Thickness: 1.2cm Ring Size: Outer diameter 1.5cm Will be packaged in a new envelope. Perfect for gifts. This is a handmade product. Please refrain from purchasing if you are looking for the quality of a mass-produced product or are overly concerned with minor imperfections. While the dimensions and materials are the same, the product may differ slightly from the photos. Please understand this beforehand. Will be shipped promptly via standard mail.