it's 100% genuine leather, made with top layer of cowhide. The leather crust was embossed with big steel board of croc skin grain in high temperature and high pressure. Showing natural gradient of the checkered pattern. As long as it's maintained properly, it will be more lustrous and more flexible. So no matter how long it takes, it will last forever.
Sliver Rings (30 mm):
High quality rings, 6 holes, diameter 30mm, size was showed on picture. It's max for 160 sheets of personal 100g paper. This rings can be exchanged easily via opening the screws.
