The Waxed Buttero leather it’s recognized around the world for its high quality. It originates at the Conceria Walpier tannery, which is a member of the Genuine Italian Vegetable Tanned Leather Consortium.
The unique thing about the color and how it is revealed is that after the waxing process, all of these straps appear jet black. Only after they are rubbed with a brush or a piece of cloth the colors start to reveal their real color. As such, the aging lifecycle of these straps in particular will be unique to each wearer.