Minerva BLACK Case
Minerva leather, unlike Minerva Box, is a plain, un-milled leather that looks matte at first, but as it gets used, the color deepens and the luster increases, so you can see and feel the change over time.
Minerva is a vegetable tanned leather made using the unique Vacchetta method from Tuscany. At first, the leather looks matte with a lack of sheen, but over time it adds a natural luster and deepens the color. This is because there is no artificial coating on the leather surface, so the gloss rises naturally from the oil contained in the leather itself as it is used. As with other vegetable tanned leathers, Minerva is especially beautiful with time.
Buttero NAVY Case
The navy color case of KANN ULTRA uses Walpier's Buttero leather.
Buttero leather is a leather made by milling the leather to make it soft and natural on the surface. Buttero leather, like other leather used by Walpier, is manufactured from the finest French hides, so the texture is dense, and the surface is smooth.
Due to Walpier’s highly regarded method of vegetable tanning, the Buttero leather boasts excellent color with a perfect surface finish and is highly resistant to scratches. This allows manufacturers to utilize the original texture of the leather without the problems normally associated with other vegetable processing.