Astrolabius - A general term for instruments used for measuring and predicting the positions of the sun, moon, planets, and stars, as well as for surveying. - About Astronomical Observation It is thought that the origin of astronomy began with the creation of calendars. When humans began to engage in agriculture, they needed to accurately understand the seasonal changes of the one-year cycle in order to know the optimal time for cultivating and harvesting crops. Therefore, it is said that the lunar calendar was born through the observation of the sun and stars. Ancient Egyptian culture is said to have been closely related to astronomical observation, and it is said that the three major pyramids of Giza, Egypt, almost align with the position of the three stars in the middle of the Orion constellation. That's amazing, isn't it? Astronomy is used in various ways like this, and unraveling the details of why it is so can also lead to understanding answers that have been mysteries until now. This item is a design inspired by the wisdom, knowledge, and tools used by people in the past to unravel the universe. It is an item that we highly recommend to those who love the universe, history, and celestial bodies. It has a vintage and cool design that is rarely seen :-)♪ Also, the leather used is cowhide nubuck. Among the many types of leather, it has the most leather-like atmosphere, and is also called the "leather within leather" as it is also used by Louis Vuitton. The natural texture that makes it clear that it is genuine leather at a glance, the high-quality feel and style, and the simple smell and smooth touch captivate the heart♪ Astronomical Observation Design Messenger Bag Color: Brown tone Made in Italy Material: Cowhide Nubuck × PVC Adjustable shoulder strap length Height: Approximately 23cm Width: Approximately 26cm Depth: Approximately 6cm There are some peeling of metal fittings, scratches, minor rust, other minor leather scratches, and what looks like pen marks in the photos, but overall, it is a very beautiful item. The inside of the bag is as clean as unused. Please check Ekeko's profile before purchasing. Color...Brown Material...Genuine Leather