A leather case compatible with the SARAYA Hand Lab series (hand sanitizer alcohol) is a collaboration between SARAYA, a company that contributes to the world's hygiene, environment, and health, and master-piece. The main body material is cow shoulder leather from LA BRETAGNA, which has a factory in the Santa Croce region of Northern Italy. Conceria La BRETAGNA was founded in 1986 by Sig Testi Giovanni, a company that spanned 40 years of his career. In order to pursue high-quality leather production, we do not use a mass production system, and are a tanner that specializes in shrink leather that is hand-crafted by a small number of elite workers.We are a member of the Italian Tanning Association. The shoulder part of raw European hides is carefully tanned, dyed, and fat-added using vegetable tannins using the traditional ``vachetta method'' that has been passed down in Santa Croce since ancient times. As a final finish, graining processing (boranata) is applied to create a unique leather look that differs from piece to piece and from part to part. This warm leather ages slowly the more you use it, so you can enjoy its changes over time.