Old indigo goes green. Decades of oxidation give deadstock vintage denim a cast that fresh indigo never has — muted, slightly green, closer to plant-dyed cloth than to a modern dip. ONI's Greencast denim builds that color in from the start: the yarn is dyed in indigo as usual, then given a green dye at the very end of the process, so the fabric arrives looking like it has spent fifty years asleep in a warehouse, and ages in the same direction as the vintage pairs it recalls.

The weave is pure ONI. This 15oz fabric is defined by its roughness and pronounced weaving irregularity, the product of loosening the thread tension to the limit and running the shuttle slowly on old power looms that Oishi-san has repaired again and again, breaking many shuttles along the way. That controlled unevenness is what the brand does better than anyone, and it is what gives the surface its depth and its fades their character. Unsanforized and one-washed.

The 200 is ONI's wide straight fit, rooted in classic workwear proportions: a high rise (11.4" at the front on a 31), a generous thigh and a wide leg that runs straight to a 9.1" opening — plenty of room to move without ever looking exaggerated or sloppy. Structured and balanced, it is the cut for traditional wide-leg denim worn with boots or heavier footwear.

Construction follows the house standard: ONI's custom copper doughnut buttons, hidden rivets on the back pockets, raised belt loops and a vegetable-tanned deerskin patch, with the selvedge ID at the outseam. The one-wash finish means no further shrinkage is expected. Made in Japan.

Fit Notes: This model fits true to size for ONI: the tagged size closely matches the actual waist measurement. Compared to most global American brands, sizing is similar or slightly smaller, so you may take the same size or one size up. The denim is unsanforized but has been one-washed, so no further shrinkage is expected. With regular wear, the waistband will stretch approximately 1 inch, allowing the fit to settle comfortably over time. We don't recommend sizing down, as starting too tight may cause discomfort and alter the intended fit of the garment. As always, we strongly recommend checking our size chart to find your perfect size.