These work overalls use black denim, characterized by the white cores of its black warp yarns, dyed with sulfide dye in Okayama. As a result, they exhibit a classic denim aging process, gradually transforming to a gray hue.

- Features black warp yarns made with sulfide dye
- Yarn cores are white, leading to gradual gray aging
- Offers the unique aging effect typical of denim
- Made from black denim fabric
- Ideal for workwear with aesthetic appeal