The ONI Coverall Jacket is a heritage-inspired chore coat that blends classic workwear structure with ONI's signature attention to detail. It features a boxy silhouette with a slight relaxed body, allowing for comfortable layering over shirts or knitwear. But shoulders are design to fit regular without being dropped as many vintage jacket does, while the sleeves are moderately tapered for a clean look.

With various ONI fabric options, the ONI Coverall Jacket blends modern sensibility with a unique, standout look

Created by Oishi-san, this heavyweight oxford cloth blurs the line between rugged workwear and refined urban style. The fabric features a slight beige-tinted olive tone that shifts under different lighting. Oishi-san spent considerable effort fine-tuning this hue, and the result is a shade that feels both contemporary and steeped in heritage.

Dyeing

Rather than opting for the more common method of post-weave sulfur dyeing, this fabric is made the old-school way—by dyeing each yarn before weaving. Though this method is more labor-intensive and costly, it yields a far deeper and more complex coloration. Over time, as the fabric wears and softens, it fades from a richer green to a soft vintage olive, revealing layers of character with every wash and wear.

Oxford Weave

This oxford stands apart not just in tone but also in texture and weight. Woven in a 2x2 basket weave at a rarw and hefty 14oz, it’s far denser and more tactile than traditional shirting fabrics. So demanding is this construction that Oni had to move beyond their usual selvedge looms, turning instead to specially calibrated machines built to handle the thick, twinned yarns. The result is an oxford like no other—visually compelling, technically impressive, and made to last.

Fit

Though it looks and fit like other ONI Coverall in the same size.

The sleeve can fit slightly slimmer than a denim jacket because of the thickness and lack of stretchness of this heavy oxfrod.

If you'd like to layer more, make sure to go at least 1 size up.

Details

• 14oz Japanese oxford
• One-wash for us, hence no shrinkage
• 100% cotton
• Olive x olive
• Sulphur dyed
• Classic coverall style
• ONI branded doughnut buttons 
• Double fold reinforced pocket edge
• Cuffed sleeve
• Cotton patch
• Made in Japan 

Size Chart