RayMay x Nagasawa Book Bound Planner TIPO 3-hole Binder[RayMay x Nagasawa Book Bound Planner TIPO 3 hole Binder] The hide of this Book Bound Planner is thick and durable Steerhide from North America. It is a material that does not easily lose its shape because it has little stretch and elasticity. In order to bring out the goodness of natural leather, the surface finishing is kept to a minimum. This may show scratches or traces of blood vessels from when the animal was alive. The more you use it, the more