Type I (506XX, c.1905), Type II (507XX, 1953), Type III (557XX, 1962). Why did each generation change? Cinch back removal, V-stitch, pointed flap — a fact-based breakdown for designers and buyers.

The pattern of fading that appears behind the knees of jeans — the lattice-like marks — is called “honeycomb” in English (in Japanese, hachinosu). Why this name? Break down the structure: the back of the knee is the place where fabric is repeatedly folded by the bending of the knee. The action of sitting and…

Selvedge denim is defined by its self-finished edge — a result of shuttle loom construction, not marketing. This article covers the weaving mechanics, the TOYODA G3, edge colors, and practical sourcing constraints for B2B buyers.

In February 1965, 50 bolts of 14.5 oz denim arrived in Kojima from Canton Textile Mills, USA. Here is how Japan’s domestic jeans industry started — and why it took eight years to go fully domestic.

Essential checkpoints for denim fabric procurement.   1. Weight (oz) 6-8oz for shirts, 10-14oz for jeans, 16oz+ for heavyweight. Same oz can feel very different; swatch evaluation is essential.   2. Yarn (Ring vs Open-End) Ring-spun produces vertical fading. Open-end gives dry, uniform texture.   3. Dyeing Method Rope dyeing creates ring-dye structure for high-contrast…

The twill direction fundamentally affects denim’s character.   Right-Hand Twill The most common weave (~95%), associated with Levi’s. Produces a firm hand feel and leg twist when washed.   Left-Hand Twill Traditionally used by Lee. Softer hand feel compared to RHT.   Broken Twill Developed by Wrangler in 1964 to eliminate leg twist. Alternating twill…

The indigo dyeing process defines denim’s characteristic blue.   Rope Dyeing Established around 1915, rope dyeing bundles 380-420 warp yarns into ropes and dips them 6-12 times in indigo vats. This creates a ring-dye effect where only the surface absorbs indigo, leaving the core white. This structure produces denim’s distinctive fading patterns.   Slasher Dyeing…

Next week we will be exhibiting at the Tokyo Textile Scope. Dye, weave, density, finishing—quiet experiments across many directions. April 15–17 in Hamamatsucho.