The area of leather is measured in a unit called "square decimeters" (dm²). One square decimeter is equivalent to 10 cm × 10 cm. A single piece of leather (half a hide) typically measures approximately 180 to 230 square decimeters. For crafting randoseru bags, approximately 70 to 75 square decimeters of surface leather is required. Additionally, soft cowhide for the back and shoulder straps requires about 30 square decimeters.
When considering only the surface leather, one piece of leather can yield about 2.5 to 3 randoseru bags, and from one cow, you can typically make about 5 to 6 randoseru bags.
The leather used for making randoseru bags comes from skins left over after the meat is processed. Tanners transform these hides into leather suitable for bag-making. They sometimes spend months working on the cowhide and horsehide used in our randoseru bags. Other professionals, such as metalworkers and fabric makers, also collaborate in crafting these school bags.
If the hide were discarded after the meat is consumed, the animal's life would end there. However, by transforming the hide into a bag, we can extend the life of the animal. We craft our bags with gratitude to all involved and hope that they will be cherished and used with care by their owners.
