- 5.5 oz. high-density Japanese cotton chambray overdyed with Binchotan charcoal
- Indigo rope-dyed warp yarns layered with charcoal for a dual black-and-blue hue
- Anatomical three-dimensional pattern design for enhanced mobility and comfort
- Triple-needle rolled seam construction for maximum long-term durability
- Dual front chest utility pockets and classic collar chin strap detail
- Pre-rinsed finish to ensure minimal future shrinkage
- Regular fit offering room through the chest and shoulders
- Crafted in Kojima, Okayama, Japan
Binchotan Charcoal Overdyeing and Sanbi Textile Engineering
Omoto Denim was created in Kojima, Okayama—the heartland of Japanese selvedge—by Hiroki Kishimoto, former CEO of Japan Blue Jeans. Grounded in the philosophy of "ordinary" denim, Omoto focuses on creating timeless garments engineered for continuous evolution. The 5017 Charcoal Dyed Work Shirt demonstrates this approach through a complex two-step dyeing process. First, the 5.5 oz high-density chambray is woven using pure indigo-dyed warp yarns. After assembly, the garment is overdyed using Binchotan charcoal—a traditional Japanese oak charcoal known for its deep, quiet warmth. Rather than masking the indigo, the charcoal layer coexists with the blue base, producing a subtle black-and-blue hue that wears in dynamically over time.
Ergonomic Patterning and Historic Utility Construction
While the 5017 Work Shirt honors early 20th-century American workwear, its pattern design is thoroughly modernized. Utilizing a three-dimensional anatomical cut mapped to the human body, the shirt eliminates arm binding and shoulder resistance common in vintage work shirts. The densely woven fabric provides a subtle, elegant sheen alongside high breathability and structural integrity. Reinforced with classic triple-needle rolled stitching, heavy-duty bar tacks, and double chest pockets, the shirt combines functional beauty with long-lasting construction.
Explore our complete selection of men's shirts and workwear or discover authentic Japanese craftsmanship from Omoto Denim at Hepcat Store.