[Large-capacity rucksack that can enjoy the aging charm of Tochigi leather] A4 magazines, wallets, smartphones, PET bottles, etc. can be stored comfortably, it is the perfect size for business bags and everyday use. The front body has a pocket, which is convenient for putting a smartphone or IC card. The length of the shoulder straps can be adjusted in nine steps, so you can enjoy changing according to the scene, such as wanting to carry tightly and tightly, and wanting to carry it loosely. □ Size: Height 28 from cuff base to bottom, cuff width 30, gusset width 16, maximum width 43㎝ Shoulder strap length 45-69㎝ (9-step adjustment) □ Material: Adult beef oil noume leather (made of Tochigi leather * A red product tag of Tochigi leather is attached) Hardware: Solid brass (buckle, bottom tack) □ Color: Camel □ Weight: about 800g [What you need to know when choosing genuine leather products] Did you know that even if you say "genuine leather" at a glance, there are huge differences in the nature and price? In fact, even though it is labeled "genuine leather", the prices vary greatly. The price difference depends on the design and manufacturing process, but it is not uncommon for the difference in terms of "material cost of leather" to be more than 10 times greater. Why is it so different? The reasons are described below. There are two main types of leather. "Chrome tanning" and "vegetable tanning". At present, the most popular leather on the market is leather tanned using "chrome tanning" chemical components. Chrome-tanned leather has the advantages of a relatively uniform finish, flexibility, and heat resistance. In addition, the cost is low because it can be completed in a large amount in a short time, but on the other hand, it is also a leather that is less likely to show the "aging" that is the real pleasure of using genuine leather. Aged scratches and dirt remain unchanged as scratches and dirt and appear as "deterioration". In other words, you can say that chrome-tanned leather is a material suitable for mass production and is the most beautiful leather when finished. On the other hand, "tanned vegetable tanned" leather that is tanned using the astringency of plants is called "Nume leather". Tanning of Nume leather is an ancient manufacturing method. Finished with the texture of the hide, the surface is easily affected by natural scars and blood traces, and the texture varies depending on the part. The cost is high because it can be finished over a long time, and it is hard to say that it is a stable material. However, it is a leather that you can enjoy "aging over time" such as the change in gloss over time and the increasing depth of colors. [Nume leather is a traditional manufacturing method, it takes time and cost, but it is not perfect when you get it, leather that will increase attachment over a long time]. I guess what you are looking for in leather is a material that can be used for a long time. "Because we have leather products, we want you to select leather that can be used for a long time and enjoy its change." With that in mind, KALEIDOSCOPE's work focuses on Nume leather. [If you want intact leather products, please do not purchase] Because it is a natural material, there are some natural scars and spots, but we cut it with the scars in it. Please note some small scratches. If you think of it as a “wound,” you are worried about it, but this is also a proof that this leather was alive. I think that the only thing that you can enjoy scratches and unevenness is unique to handmade and genuine leather. [Commitment to metal fittings] All metal fittings except the slash are made of solid brass. Brass is considered a "good luck metal" in Europe and the United States, and was also used as a charm. It is a material that increases in taste as it is used like leather. [Production commitment] * By hand as much as possible. KALEIDOSCOPE's works, from pattern paper production to leather cutting, focus on "making as much as possible by hand-cutting with a sharpened leather knife."