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Research & Cases

Research and case studies on denim, fit, fabric, everyday styling and product practice.

3D Whiskers: From Natural Raw Denim Fading to Industrial Replication

3D Whiskers: From Natural Raw Denim Fading to Industrial Replication

This article analyzes the evolution of 3D whiskers from natural raw denim fading to industrial replication. Natural whiskers result from creases and fading formed through long-term wear, while pressed 3D whiskers replicate joint creases and color loss in advance using processes like resin spraying, manual pleating, high-temperature setting, and hand-rubbed washing. Compared to standard flat whiskers, this technique offers both light-dark contrast and fabric dimensionality, creating a rugged, vintage style that authentically restores the visual layers and detailed texture of jeans aged by time.

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From Patches to Art: The Aesthetics of Boro Mending

From Patches to Art: The Aesthetics of Boro Mending

Originating in Aomori during Japan's Edo period, Boro is a survival craft where laborers patched scraps for warmth, often using Sashiko stitching. Today, Boro aesthetics align with Wabi-Sabi philosophy. Combined with denim, it records the passage of time through indigo-dated vintage fabric patches and hand stitches. These handmade denim pieces have become scarce treasures in the fast-fashion era, embodying a sustainable, slow-living lifestyle.

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What are Slubs in Denim? A "Defect"?

What are Slubs in Denim? A "Defect"?

Slubs are vertical, uneven textures on denim fabric caused by irregular yarn thickness, once considered textile flaws. Originating from low-tension weaving on old shuttle looms and uneven spinning draft, they create layered fading due to differential dye absorption after wear. Japanese brands have revived this vintage texture, making it a sought-after visual grain for denim enthusiasts, with modern variations like micro-slubs now available.

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Left or Right? The Direction of Denim Twill

Left or Right? The Direction of Denim Twill

This article analyzes the twill structure of denim, distinguishing between left-hand (S-Twill) and right-hand (Z-Twill). Right-hand twill is stiffer due to its alignment with Z-twist yarns, while left-hand twill is softer. The article also explains the cause of "leg twist" in jeans after washing and introduces Wrangler's Broken Twill weave, which alternates left and right twills to create a herringbone pattern and improve fabric characteristics.

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The Past and Present of Vintage Workwear "Overalls"

The Past and Present of Vintage Workwear "Overalls"

This article traces the evolution of denim overalls from Indian coarse cloth workwear to modern fashion. Initially serving as durable uniforms for slaves and workers, the modern prototype was established by the Lee brand in 1911. After WWI, they were integrated into women's designs, shifting towards casual wear post-war. In the 60s, they held political symbolism; in the 70s, they resurged with hippies; and in the 90s, they showcased a youthful vibe through film and TV. Though they once faded, they still retain a loyal audience.

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Why Denimheads Are Waiting for “Train Tracks”

Why Denimheads Are Waiting for “Train Tracks”

“Train Tracks” are one of the most celebrated details in raw denim fading. These parallel, vertical fade lines along the outseam result from indigo loss due to long-term wear and washing. Named for their resemblance to railway ties, they represent unique “traces of time,” becoming one of the most recognizable features of natural fading.

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