With summer approaching, ONI has revisited their popular indigo chambray from previous years and taken it a step further—developing a rare double-dyed selvedge version. Intentionally woven with irregular cotton yarns, this fabric breaks away from the typical flat and smooth impression of lightweight chambray cloth. At 8oz, it strikes the perfect balance: breathable yet substantial, offering a vintage look that's easy to wear in warm weather.

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

 

What is Double Dyeing?

Double dyeing refers to the process where both the warp and weft yarns are dyed, resulting in a fabric that shows color on both the front and back—or even contrasting tones between the two. This is in contrast to the usual single-dye approach, where only the warp or weft is colored (as seen in most denim and chambray). The result is a more playful and unique fabric, especially in its raw form, with tones that differ from typical twill chino fabric. Thanks to the doubled dye content, the fabric promises a richer, more dimensional fading character as it ages.

What is a Chambray?

Traditional Chambray is a lightweight, breathable plain-weave fabric that looks similar to light denim but feels much softer and more comfortable to wear.

It’s traditionally woven with colored warp threads and white weft threads, giving it a subtle, slightly textured matte finish with visual depth.

Originally developed in 16th-century France, chambray has long been favored for its durability and airy feel, making it a go-to fabric for warm-weather garments like shirts, dresses, and workwear. Depending on the weave density, it can lean either formal or casual—making chambray a versatile fabric that blends practicality with timeless style.

 

“BETACHAM”

In Japanese, there’s a word “ベタな” (beta-na), which conveys the idea of something plain, uniform, or lacking variation. Traditional chambray fabric is typically woven with colored warp threads and white weft threads, giving it a textured, two-tone look. However, in this case, both the warp and weft threads are the same color, resulting in a fabric that doesn’t look like typical chambray. Because the overall tone appears flat and uniform—almost as if the fabric were fully painted in a single color—it was named “BETACHAM.”

“Chambray is most commonly used for classic-style lightweight shirts. Seeing it applied to chore jacket, especially with a double-dye setting, is genuinely intriguing.”

— Sven, Store Manager

Details

• 8oz unsanforized Japanese selvedge chambray
• One-wash for us, hence no shrinkage
• Traditional Japanese sun-dried method
• 100% cotton
• Indigo warp x White weft
• Blue selvedge ID
• ONI branded doughnut buttons
• Vintage style cloth patch
• Made in Japan

    

Size Chart