The Samurai Jeans S500AX “AI Plus” 18oz Regular Straight Jeans represent a bold fusion of traditional craftsmanship and modern denim innovation. Made in Japan, this model features a distinctive 18oz AI+ fabric that blends standard indigo, natural indigo (ai-zome) and Samurai Cotton through a special rope-dyeing technique, creating a uniquely deep, saturated color and a rugged, tactile texture beloved by denim enthusiasts.

The regular straight fit with a gentle taper offers everyday versatility and long-lasting comfort. Every detail reflects Samurai’s obsessive approach to craftsmanship: a leather patch illustrating an indigo-dyer artisan, silver-painted “taiko” drum buttons, copper coin-style rivets, and AI+ printed pocket bags, all complemented by a special flasherexclusive to this model.

Construction is equally exceptional, with two-tone stitching in banana yellow and golden brown, executed with varying stitch counts, needle gauges, and widths across the garment — a testament to Samurai’s precision and dedication. The result is a pair of jeans that epitomizes the brand’s relentless pursuit of quality, authenticity, and innovation in Japanese denim.

Fit Notes: Like many Samurai Jeans models, this one runs slightly small in the one-wash version. In general, we recommend selecting one size up from your usual. As always, please refer to the size chart to confirm the best fit. The denim is unsanforized but the jeans have been one-washed, so no additional shrinkage will occur.