[Large-capacity genuine leather backpack with the charm of Tochigi leather] Made using the finest domestic leather. It is an all-leather rucksack. It is a large capacity size that still has room for A4 size documents, books, wallets, smartphones, plastic bottles, etc. The length of the shoulder straps can be adjusted in eight steps, so you can enjoy the change in your mood of the day, such as carrying your back tightly or carrying it in a lower position. The inside pocket is a double pocket with a gusset. You can store half wallet and smartphone separately as shown in the image. Side fasteners are convenient for putting things in and out while carrying them (manufactured according to the dominant hand). □ Size: Height 36 from base to base, base width 24, gusset width 15, maximum width 38㎝ Shoulder strap 60 ~ 81㎝ (8-stage adjustment) □ Material: Body part: Raised Nume shrink leather, Bottom part: Oil Tone leather made by Tochigi leather Hardware: Clasp / Zinc alloy Buckle / Solid brass □ Color: Camel (bitter brown and black are also available) □ Weight: Approximately 900-1000g (There is a slight blur due to the thickness of the leather. It is lightweight as a leather backpack.) [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 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. [In the beginning, the skin is light and soft, but it will be polished by friction as you use it, and it will produce a gloss] You can enjoy how it changes every day. It is easy to stain with water. Please refrain from using in the rain. * Even if spots are formed, it will grow into a candy color when used as an aging process. [If you want intact leather products, please do not purchase] Since natural leather is finished in a bare state, there are some natural scars and unevenness in some places. 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 to be "a metal that brings good luck" in Europe and the United States, and is a material that tastes as good as leather.