Product introduction: Tochigi leather smart key case. A smart key can be stored in the main body, and there are 3 key chains on the back. Brand Introduction Tochigi Leather Full Vegetable Tanned Leather We made leather accessories using full vegetable tanned leather (tanned leather) tanned with vegetable tannins from Tochigi Leather, a leather manufacturing company that is said to be the best in Japan. Tochigi Leather Co.'s tanned leather is made from a tannin agent extracted from the bark of mimosa trees grown in South America, and the basic material is made over a period of one to one and a half months, and then finished by dyeing using methods such as water dyeing. This tanned leather is a high-quality leather created by skillfully utilizing craftsmanship techniques.