ONI Denim 03502-LS13.5 13.5oz Long Slab Denim Coverall

With the 03502-LS13.5 Coverall, ONI Denim brings its new 13.5oz Long Slab Denim to a classic work jacket inspired by early 20th-century American coveralls. Lighter than the brand's iconic Secret Denim jackets, it nevertheless retains all the character that has made the Japanese maker so highly regarded among denim enthusiasts. Woven from exceptionally irregular cotton yarns, this exclusive fabric develops an elongated, highly expressive texture that will evolve over time, revealing a beautifully contrasted patina.

Features

• 100% cotton / 13.5oz
• One Wash / Pre-washed to eliminate further shrinkage
• Exclusive Long Slab denim
• Traditional indigo rope-dyed warp yarns
• Highly textured fabric woven from Long Slub yarns
• White selvedge ID
• Classic workwear fit
• Four patch pockets
• One interior pocket
• Custom ONI buttons
• Selvedge hanging loop
• 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 13.5oz Long Slab Denim perfectly reflects this relentless pursuit of innovation. Unlike conventional slub denim, where the yarn irregularities are relatively short and scattered, this fabric is woven from yarns featuring long, uneven variations in thickness, creating an elongated texture that runs throughout the entire fabric. Its organic character is further enhanced by weaving on vintage shuttle looms set to low tension. This slower, looser weaving process allows the cotton to retain its natural loft, resulting in a denim with exceptional depth, a dry and rugged hand, and surprising suppleness despite its highly textured appearance. Although weighing just 13.5oz, the fabric has the visual presence and character of a much heavier denim.

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 garment is worn, the indigo gradually fades along areas of friction, revealing sharp, high-contrast fades. Combined with the pronounced irregularity of the Long Slab Denim, this construction promises remarkable aging, with ever-increasing depth, texture and character emerging over years of wear.

The 03502 Coverall draws inspiration from traditional American work jackets with a clean, functional construction. Its straight cut offers plenty of room for layering, whether worn over a simple T-shirt, a shirt or a sweatshirt. Four patch pockets, an interior pocket, custom ONI buttons and a selvedge hanging loop highlight the meticulous attention to detail while preserving the understated aesthetic that defines the brand.

Fit & Sizing

The 03502-LS13.5 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

Having introduced its new Long Slab Denim across several jean fits, ONI Denim now applies this remarkable fabric to one of its signature jackets. The 03502 Coverall combines timeless workwear styling with one of the most expressive denim fabrics the brand has developed in recent years. Lightweight, exceptionally comfortable and packed with character, it is a jacket that will age beautifully, accompanying you from spring through winter layering while developing an extraordinary patina over time.