BOSTANTEN bag is made of cow split leather. Cow split leather comes from cow's skin, genuine leather. It is harmless to human health and more durable than vinyl, while vinyl is all made of chemical material and irritating to human.

Cow Split leather is often coated with various colors and pattern. It is moderate genuine leather, soft and anti-scratch. To create a vintage and noble look, the leather is often polished and oiled, which makes the surface shinier and sleeker. The more you use, the more retrospective it will be. It may have natural odor at first, but the smell will disappear after couple days' airing out.