ONI Denim 03500-LWD 12oz Loose Weave Denim Coverall

With the 03500-LWD Coverall, ONI Denim brings its innovative 12oz Loose Weave Denim to a timeless work jacket inspired by classic American coveralls. Beneath its relatively lightweight construction lies a remarkably rich fabric, woven at exceptionally low tension to preserve the cotton's natural loft. The result is a highly textured jacket that feels comfortable from day one and will gradually develop a deep, characterful patina with wear.

Features

• 100% cotton / 12oz
• One Wash / Pre-washed to eliminate further shrinkage
• Exclusive Loose Weave denim
• Traditional indigo rope-dyed warp yarns
• Low-tension Loose Weave construction
• Non-selvedge denim
• Highly textured fabric with a dry hand
• Classic workwear fit
• Four patch pockets
• One interior pocket
• Custom ONI buttons
• Made in Japan

Description

ONI Denim remains one of Japan's most elusive denim makers. Behind the name stands Oishi-san, a master craftsman who has spent more than sixty years developing some of the industry's most distinctive denim fabrics. Eschewing conventional marketing altogether, the brand has neither an official website nor a social media presence, choosing instead to devote its energy entirely to fabric development. This uncompromising philosophy is one of the reasons why ONI remains something of a cult favourite among denim enthusiasts worldwide.

The 12oz Loose Weave Denim showcases another facet of ONI's expertise. Rather than relying on extremely irregular yarns to create texture, the mill focused on the very structure of the fabric itself, weaving it on vintage shuttle looms set to low tension. This method allows the yarns to retain their natural loft while creating more space between them, resulting in a remarkably airy, lively and three-dimensional fabric. Despite weighing just 12oz, the denim offers exceptional visual depth and the dry, rugged hand that has become a hallmark of ONI. Unlike the vast majority of ONI Denim collections, this fabric is intentionally non-selvedge. Rather than being a compromise, this is a deliberate technical choice that allowed the mill to focus entirely on the weave itself, creating a fabric that is softer, airier and exceptionally expressive.

The warp yarns are traditionally rope dyed, allowing the indigo to penetrate only the outer layer of each yarn while leaving the core untouched. As the jacket is worn, the indigo gradually fades along areas of friction, revealing sharp, high-contrast fades. Combined with the open structure of the Loose Weave Denim, this construction allows the fabric to develop even greater depth, texture and character over years of wear.

The 03500 Coverall draws inspiration from classic American work jackets with a clean, functional design. Its straight cut offers plenty of room for layering over a T-shirt, shirt or sweatshirt while maintaining a balanced silhouette. Four patch pockets, an interior pocket and custom ONI buttons reflect the brand's understated approach to workwear, where every detail serves both function and durability.

Fit & Sizing

The 03500-LWD features a classic workwear-inspired fit designed to provide comfort and freedom of movement without feeling oversized. Its balanced proportions make layering effortless while maintaining a clean silhouette. Thanks to the One Wash treatment, the jacket will experience virtually no further shrinkage. We recommend choosing your usual size.

Why we selected it

By introducing its innovative 12oz Loose Weave Denim in a classic coverall, ONI Denim demonstrates once again that outstanding Japanese denim is about far more than selvedge. The deliberate choice to prioritise an exceptionally loose weave results in a jacket with remarkable texture, comfort and character. Lightweight enough for everyday wear yet capable of developing an extraordinary patina over time, the 03500 Coverall is a perfect expression of ONI's unique approach to denim craftsmanship.