In the main body material, it is the environmentally friendly nylon fiber to reduce the energy and the consumption of the material by regenerating the recycled waste recovered from the factory, reduce the waste, reduce the harmful gas in the incineration, reduce the pollution of air and water, compared with the virgin nylon use. In addition, it is excellent in strength and durability compared with general 6 nylon. Cordura coated with this 420D thick lycrace nylon thread ? Eco is used. The surface is treated with water repellent and two urethane coating on the back. There are 13 kinds of the material used in the Japan Leather Technology Association (Jes), the harmful substance inspection (Jes) which is harmful to the human body, and does not use any hexavalent chromium and is made of the eco cow leather tanned with vegetable tannin. It is a casual series that can be used easily as a subbag of outdoor and travel, as well as the usual use of an inclined switch to be vivid.