ONI Kase 鬼枷染

Kase employs a new innovation that combines natural indigo kase-zome (hank dyeing) with rope-dyed core techniques, creating a rich, three-dimensional texture and uneven color depth. This is especially rare due to its fading ability, while all other natural indigo hank dyed denim remains unchanged in color through wear.

This 16oz fabric created by master Oishi-san at ONI delivers natural fading over time due to its slubby, ultra low-tension weave. It stands out for blending historical dyeing methods with modern denim innovation. 

What is Hank Dye?

Hank dyeing dyes cotton yarn in loose skeins (hanks) rather than in long, tensioned ropes. The yarn is bundled, tied, and repeatedly immersed in indigo vats, allowing dye to penetrate slowly and unevenly.

Unlike modern rope dyeing—which prioritizes speed, consistency, and shallow dye penetration—hank dyeing accepts variability as a feature, not a flaw.

ONI 200 fit

ONI 200 fit seat on a sweet spot between the popular regular straight like 288 & Wide straight jeans like 222. With the traditional configuration of high waist and wide straight legs, 200 fit focuses on the classic appearance, and cancels the N-shaped brand pocket arcuate design on the back pocket. The plain fabric makes the appearance more minimalistic, and at the same time strengthens the matching possibilities with various items and styles. The wide trousers provide enough space for movement, which can effectively reduce the discomfort caused by humidity and heat in Taiwan's subtropical climate. If you're wearing this in a dry climate, it will give you an unprecedented experience if you are new to wide jeans.

How much does ONI 'Secret Denim' stretch in the waist?

Typically 1.5 - 2 inch (~ 4-5cm) in waist circumference. Basically you can expect them to stretch at least half size more than other Japanese jeans brands. If you have a tummy / belly, go for a safe size. If you’re lean in the stomach, go for a more fitted one.

ONI jeans general size recommendation

Go up at least 2 sizes from major US brands. Usually the same or go down 1 size from other Japanese brands.

Details

• 16oz unsanforized Japanese selvedge denim
• One-wash for us, hence no shrinkage
• 100% cotton
• Natural indigo x white
• Kabuki selvedge ID
• High rise
• Wide straight leg
• Wide leg opening
• Ultra low-tension weaving, superb comfort and short break-in time
• ONI branded doughnut buttons 
• Hidden rivet pockets
• Raised belt loops
• Veg-tanned leather patch
• Made in Japan
• Super limited production

*Both 222 & 200 are only produced without pocket arcuate.