The main body fabric is nylon twill with 320D length and width and is treated with Komatsu Matere Co., Ltd.'s Kombu®-N, which makes it supple yet hard enough to stand on its own, making it look like kelp, a marine product. The special fabric is characterized by its dryness and tightness, and the original lintel/denim patchwork pattern by “FDMTL” (Fundamental) is available in a rich variety of 16.7 million colors called Mona Lisa ® by Komatsu Matere Co., Ltd. We use original fabrics that are clearly digitally printed using advanced technology to control this. Mona Lisa ® is an environmentally friendly material that does not use unnecessary dyes or chemicals and significantly reduces the amount of water, resources, and energy required for processing compared to conventional materials. The attached fabric is a combination of INVISTA's 1000D CORDURA® nylon and 1680D CORDURA BALLISTEC® nylon, which has approximately five times the wear and tear strength and durability of regular nylon. In addition, the attached leather is made of 1.8 m/m thick eco-numerous cow leather tanned with 100% vegetable tannin, without using any chemicals or dyes that cause environmental pollution, or any other substances harmful to the human body, or hexavalent chromium. (NISSENKEN Oeko-Tex Standard 100 certified).

Based on master-piece's standard link series, FDMTL's iconic lintel/denim patchwork pattern is created using the high-precision processing technology of Kombu ®-N and Mona Lisa ®, making it possible to achieve clarity that surpasses traditional print processing. This is a collaboration series that combines printed fabric with various different materials that are unique to master-piece.