This casual series uses cotton serge as the main material and combines GAIFU, which has superior strength, for the bottom and other parts that are subject to heavy loads, with 70 denier ripstop nylon for side pockets, etc. The contrast in appearance of the materials is a key design point.
The main material, cotton serge, is densely woven and has a water-repellent finish on the surface, so it has the same water-repellent function as GAIFU. The reverse side is coated with acrylic to increase the resistance to fraying and to reduce fabric stretching.