Blue refabric
Blue refabric / Herringbone Wide Tapered Vintage Trousers
Based on 1940s military trousers, this pair has been reimagined with a modern balance.
While offering room through the waist, a gentle taper creates a clean silhouette without sacrificing comfort.
The fabric is a herringbone twill, dyed using a vat-dyeing process to achieve rich depth of color. With continued wear, the color gradually fades, developing a vintage-like character over time.
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Blue refabric
Built on a concept of high-quality Japanese fabrics and a commitment to authentic craftsmanship. Originally produced for many years as a ROCOCO exclusive line of JAPAN BLUE JEANS, it relaunches in 2026 under the name “Blue refabric.”
Production centers around partner factories of JAPAN BLUE JEANS. The name combines “Blue” — representing Japanese denim — with “Refabric,” a coined word blending Republic and Fabric. Inspired by the idea of a “Blue Republic,” the brand honors Japan’s textile heritage while creating garments that bring out the individuality of the wearer.
Primarily using premium denim from Okayama, each piece is carefully crafted in trusted domestic factories. The design approach is minimal yet defined, allowing the character and texture of the fabric to stand out. From “the country of fabric, Japan” to the world—Blue refabric presents a new standard rooted in respect for Japanese textiles.
Military heritage with proven durability
The fabric is a reproduction of the herringbone twill used in the 1940s U.S. Army M-43 HBT combat trousers.
The distinctive herringbone weave creates a textured surface with depth, setting it apart from plain weaves. With excellent durability, it delivers the toughness associated with its military origins.
Additionally, vat dyeing gives the fabric a muted, deep tone. Because the dye sits on the surface rather than penetrating fully, the color gradually fades with wear, developing a vintage-like character over time.
The side seams are finished with double stitching, and a washing process creates natural puckering. With continued wear, fades become more pronounced, developing a rich patina reminiscent of vintage pieces.
The waist features a practical zipper fly for easy wear, along with a coin pocket at the front for added functionality.
Side pockets are positioned for easy hand access, while the back features clean welt pockets for a refined look.
An offset center back belt loop adds a subtle but distinctive design accent.
A label inside marks production by a Japan Blue Jeans partner factory.
Based on a wide tapered silhouette, the pants provide room through the hips and thighs, then gently taper toward the hem for a clean finish.
A slightly lower rise reduces visual heaviness, creating a lighter, more balanced look. The result is a versatile silhouette that feels relaxed yet refined.
SIZE
※Check out the size guide for more accurate measurements.
Staff comment
| ●Staff Height/Weight: 165cm / 64kg Wearing size: S Body type: Slim Thighs: Standard Fit (Waist): Just right Length: Just right The waist fits just right and stays secure even without a belt. The clean taper toward the hem creates a well-balanced silhouette, making it easy to wear even for a slim build. |
| ●Staff Height/Weight: 171cm / 70kg Wearing size: M Body type: Standard Thighs: Standard Fit (Waist): Just right Length: Just right Well-balanced overall. There is room through the hips and thighs, while the natural taper toward the hem keeps the look refined without feeling bulky. It works effortlessly with both casual styles and more polished looks with a shirt. |
| ●Staff Height/Weight: 177cm / 73kg Wearing size: L Body type: Standard Thighs: Standard Fit (Waist): Just right Length: Just right The waist offers a comfortable, non-restrictive fit. With a moderate amount of room—not overly wide—it balances ease of movement with a clean appearance. The taper from the knee down keeps the overall look relaxed yet sharp. The length creates a single break, making it easy to pair with both leather shoes and sneakers. |
| ●Staff Height/Weight: 181cm / 78kg Wearing size: XL Body type: Solid Thighs: Muscular Fit (Waist): Just right Length: Just right The waist fits securely with a reassuring feel. While the overall fit is relaxed, the taper toward the hem prevents it from looking heavy. The length is well-balanced, offering a calm, refined impression suitable for a more mature style. |
SPEC
| Materials | 100% cotton |
|---|---|
| Country of Origin | JAPAN |
| Model Wearing | Wearing size L(177cm/70kg) |
| Care Instructions | ※Please note that the colours may look different from the real thing depending on your monitor environment. |
| Weight | 570g |
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