We use ’Japanese Bueblo leather’ which is processed in a special way. It s a type of leather that has been processed to absorb the oil in the leather and the same oil is also used for bridle leather when applying surface-treatment. By this process, you can enjoy its elastic and luxury texture. Enjoy the natural aging process of the leather. Normally, the color gets lighter and the surface becomes blocky when leather is folded however it will fade away if you gently rub with your hands or a soft cloth. Enjoy the natural aging process of leather.