Based on a vegetable tannin tannin, a smooth leather with a natural glossy feeling is used for the main body by containing plenty of dyes and oils based on the full tannin kip leather, giving heat with an iron. It contains a large amount of oil, so the touch is good and finished with a moist texture. Attached 3.0mm and 2.5mm thick, tanned with vegetable tannins without using any of the harmful substance tests (JES) and harmful to the human body, which have 13 species of the Japan Leather Technology Association. I use Eco Numekou leather. It is a series that combines leather with different textures and is simply finished.