This type of leather is generally referred to as vegetable-tanned leather. It is produced by slowly immersing hides (for one to two months) in a tanning solution extracted from plant barks and other sources, allowing the tannin to penetrate the leather. Although this process is very time-consuming and labor-intensive, it results in leather that is less prone to shrinkage, durable, long-lasting, and becomes more comfortable with use. It also offers an enjoyable aging process and is gentle on both people and the environment. Approximately 85% of items currently circulating in the leather industry are said to use chrome-tanned leather, which is finished quickly and at a lower cost using chemical agents. However, at LENY, we only use vegetable-tanned leather. Among these, we specifically use leather from Shonan Leather Industrial Co., Ltd., one of only three companies in Japan that perform pit tanning.