The Japan Blue JMJA2100 belongs to the brand's ReDESIGN Label — a considered line born from the concept of rediscovering denim through design. Where most vintage-inspired denim relies on faithful reproduction, ReDESIGN takes a different approach: reimagining denim's natural aging and wear as intentional design elements, and reconstructing them through the lens of world-class craftsmanship.

The fabric is an original 12oz selvedge denim that combines an authentic, classic appearance with a surprisingly lightweight feel and soft, comfortable hand. Woven at Japan Blue's own mill in Kojima, Okayama, the cloth carries the honest character of traditional selvedge production alongside the refined touch that defines the brand today. The warp threads are dyed with pure indigo, developing a remarkably faithful, natural blue tone as the denim ages.

The wash is where this model reveals its most distinctive character. Applied through Kojima-Okayama's world-class processing know-how, the finish blends skilled handwork with advanced processing techniques to create realistic used-denim effects that only seasoned artisans can achieve. The subtle highlights, whiskers, and puckering unique to selvedge denim are captured in data and faithfully reproduced across the fabric, delivering a rich lived-in character from day one. Playful paint splatters add an expressive, personal edge to the design — turning wear into a deliberate signature.

The silhouette is a classic straight fit with a relaxed hip that gently tapers down to form a clean, straight leg through the hem. Pattern engineering follows the ReDESIGN philosophy of modern three-dimensional silhouettes — beautifully studied to flatter without clinging, and built for the comfort of daily wear.

Construction details are kept intentionally minimalist to preserve the clean visual identity: a UNIVERSAL Japan® metal zipper fly, copper male rivets, a blue cowhide leather patch, and a distinctive blue selvedge ID that quietly signals the new-line origins.

Fit Notes: This model fits true to size, and is only produced in even-numbered sizes. Compared to most global American brands, we recommend taking your usual size for the intended fit. If you fall between two sizes, we recommend sizing down to the closest available size. As the denim has been laser-washed, no shrinkage is expected. As always, we strongly recommend checking our size chart and comparing it with your best-fitting pair to find the perfect size.