ONI Denim Men's Brown-Khaki Sulfur-Dyed Heavy Oxford Work Pants Relaxed Straight Fit Button Fly Trousers Made in Japan (ONI-207HOX-BRK)

ONI Denim Men's Brown-Khaki Sulfur-Dyed Heavy Oxford Work Pants Relaxed Straight Fit Button Fly Trousers Made in Japan (ONI-207HOX-BRK)

ONI Denim

This pair of men's casual trousers is made in Japan by ONI Denim, a brand known for its distinctive craftsmanship. Inspired by classic work pants and utility trousers, in a style often referred to in Japan as baker pants, this piece is crafted from 13 oz. sulfur-dyed heavy Oxford fabric in a brown-khaki shade, developed through the brand's unique fabric-making techniques to give the material a rugged, uneven surface texture with visible grain. Finished with the brand's signature attention to detail throughout, it balances workwear character with everyday wearability, blending heritage-inspired aesthetics with modern style in a way that fits naturally into a contemporary casual wardrobe. In terms of fabric, it is made from 100% cotton yarns dyed to a brown-khaki shade using sulfur dyeing, then woven into a substantial 13 oz. heavyweight Oxford cloth. The natural irregularity and subtly slubby character of the yarns, combined with the characteristics of the sulfur dyeing process, give the fabric a rugged, uneven surface texture and subtle tonal variation across the material. While durable and substantial, the fabric also retains a certain suppleness, allowing it to feel firm without becoming overly stiff. As part of the finishing process, the garment has been pre-washed, also known as one-wash, to help minimize shrinkage. In terms of construction and detailing, the trousers feature a five-button fly including the top waistband button, two large front patch pockets with slanted openings, and two rear flap pockets with button closures. The waistband is fitted with seven belt loops, along with adjustable button tabs positioned on both sides. On each side, one end of the tab is sewn into the waistband, while the other end is finished with a buttonhole, allowing it to be fastened to either of two buttons set approximately 3.5 cm (about 1.4 inches) apart for adjustable waist sizing. It is typically fastened to the button positioned closer to the side seam, but can also be secured to the button positioned farther inward to reduce the waist for a closer fit. All buttons used throughout the garment are black-coated metal buttons engraved with the ONI Denim name, reinforcing the trousers' rugged and cohesive overall appearance. For fit, these trousers are cut with a relaxed-to-loose fit, a straight leg, and a mid-to-high rise. The fit provides comfortable room through the seat and thighs without becoming overly baggy, resulting in a balanced silhouette that remains easy to wear. This model is a new original release from ONI Denim, bringing together classic styling with the brand's signature fabric development and craftsmanship.

Gender: Men.

Our model is wearing a tagged size 29. He stands 5'9" (175 cm) tall, weighs 127 lbs (58 kg), and has a chest measurement of 36 inches (91 cm). His usual size in U.S. denim is W29.

Fit: These trousers are cut with a relaxed-to-loose fit, a straight leg, and a mid-to-high rise. The fit provides comfortable room through the seat and thighs without becoming overly baggy, resulting in a balanced silhouette that remains easy to wear. Pre washed, minimal shrinkage. To ensure a comfortable fit, please refer to the actual garment measurements listed below. All measurements are taken with the garment laid flat and are provided in both centimeters and inches. Please note that slight variations may occur due to manual measurement. Fit may also vary depending on the design of each style as well as individual preference. For best results, we recommend comparing these measurements with a similar garment you already own.

Available Sizes.

The following measurements show the garment itself, not your own body.
Please compare them with a similar piece from your wardrobe to get a better sense of fit.

- Size 29 (Waist: approx. 28.7" - 29.0")
- Size 30 (Waist: approx. 29.9" - 30.0")
- Size 31 (Waist: approx. 30.7" - 31.0")
- Size 32 (Waist: approx. 31.9" - 32.0")
- Size 33 (Waist: approx. 32.7" - 33.0")
- Size 34 (Waist: approx. 33.9" - 34.0")
- Size 36 (Waist: approx. 35.8" - 36.0")
- Size 38 (Waist: approx. 37.8" - 38.0")


In inches

In centimeters

Lay the jeans flat, face up, without stretching or pulling the fabric.

Waist: Measure straight across the back waistband from one side to the other at the natural dip, then double that number to get the full waist size.

Inseam: Measure from the crotch seam down to the bottom of the leg along the inside seam.

Front Rise: Measure straight from the crotch seam (where the inseams meet) up to the top edge of the front waistband.

Thigh: Measure the width of the leg about 3 cm (approximately 1.2") below the crotch seam, straight across from one side to the other.

Leg Opening: Measure straight across the bottom hem of one leg, from one side to the other. This measurement represents the leg opening width.

Made in Japan.
Brand new with tags, in unused condition.
*All measurements are taken with the garment laid flat.
*Please note that slight variations in measurements may occur.
*Actual color may differ slightly from the photos due to lighting and screen settings.

Overall Product Character:
- This pair of men's casual trousers is made in Japan by ONI Denim, a brand widely recognized for its distinctive approach to fabric development and construction. The design draws inspiration from classic work pants and military utility trousers, a category of practical pocketed trousers often referred to in Japan as baker pants. Rather than reproducing a single historical military specification exactly, this model presents a modern reinterpretation that integrates workwear and utility-trouser design cues with ONI Denim's own fabric-focused identity. The result is a pair of trousers that combines utilitarian character, visible material depth, and everyday wearability in a form that fits naturally into a contemporary casual wardrobe.

Fabric Composition and Base Cloth:
- The fabric is a 100% cotton heavyweight Oxford cloth with a fabric weight of 13 ounces. In contrast to lighter or flatter Oxford fabrics, this heavier construction gives the material greater body, presence, and structural firmness. The weave produces a clearly defined grain and a slightly raised surface character, contributing to the fabric's robust appearance. While substantial in hand, the material is not overly rigid, allowing it to retain enough flexibility for practical daily wear.

Sulfur Dyeing and Color Expression:
- The yarns are sulfur-dyed to a brown-khaki shade before being woven into the finished cloth. Sulfur dyeing is known for producing a muted, dry-looking color expression with a slightly uneven cast rather than a perfectly flat, uniform tone. In this fabric, that dyeing method contributes to subtle tonal variation across the surface, giving the trousers a more weathered, utilitarian appearance from the outset. As the garment is worn and washed over time, the sulfur-dyed color is also expected to develop additional depth and natural fading, reinforcing its workwear-oriented character.

Yarn Character and Surface Texture:
- A defining feature of the material is the natural irregularity of the yarns themselves. The yarns show a subtly slubby character rather than an overly smooth, highly uniform appearance. Combined with the weave structure and the sulfur-dyeing process, this produces a rugged, uneven surface texture with visible grain and restrained color variation. The resulting surface is visually active and tactile, giving the fabric a more organic and character-rich appearance than flatter, more standardized cotton cloths.

Fabric Hand and Wear Characteristics:
- Although the cloth is durable and substantial, it also retains a certain suppleness. This balance is important to the overall wearability of the trousers: the fabric feels firm, dense, and hard-wearing, yet does not become excessively board-like or restrictive. This combination of body and flexibility supports the intended workwear-inspired silhouette while also making the garment practical for repeated casual use.

Finishing Process:
- As part of the finishing process, the garment has been pre-washed, also referred to as one-wash. This treatment helps remove much of the fabric's residual shrinkage before sale, improving dimensional stability and reducing the amount of shrinkage likely to occur with later home laundering. In addition to helping stabilize the fit, the one-wash process also allows the fabric to settle into a slightly more natural surface state from the beginning.

Front Closure Construction:
- The front is constructed with a five-button fly, including the top waistband button. Compared with a zipper fly, a button fly offers a more traditional workwear-oriented construction and contributes to the garment's vintage-inspired character. The use of multiple fly buttons also creates a visually balanced front closure and reinforces the trousers' utilitarian design language.

Front Pocket Configuration:
- The front is equipped with two large patch pockets with slanted openings. This pocket arrangement reflects the practical logic associated with classic utility trousers: the patch-pocket format keeps the layout visually direct and functional, while the slanted entry improves ease of hand access in actual wear. These pockets are central to the garment's baker-pants / utility-trouser identity, giving the front a distinctive and recognizably utilitarian appearance.

Rear Pocket Construction:
- The back features two flap pockets with button closures. This design provides more secure storage than an open patch-pocket arrangement and further reinforces the military- and utility-derived character of the trousers. Visually, the rear flap pockets also add structure and balance to the back view, complementing the strong, practical feel established by the front pocket layout.

Waistband Construction and Belt Loops:
- The waistband is fitted with seven belt loops, providing stable belt support across the waist and helping distribute tension more evenly when worn with a belt. The use of seven loops, rather than a more minimal arrangement, contributes to both functional security and a more fully considered construction. This detail supports the trousers' practical, field- or workwear-inspired identity while also improving everyday usability.

Side Button-Tab Waist Adjustment:
- A particularly distinctive construction detail is the pair of adjustable button tabs positioned at both sides of the waistband. On each side, one end of the tab is sewn into the waistband, while the opposite end is formed with a buttonhole. This allows the tab to be fastened to either of two buttons placed approximately 3.5 cm (about 1.4 inches) apart. In standard wear, the tab is typically secured to the button positioned closer to the side seam, but it may also be fastened to the button positioned farther inward to reduce the waist for a closer fit.

Button Hardware:
- All buttons used throughout the garment are black-coated metal buttons engraved with the ONI Denim name. This hardware choice gives the trousers a harder, more industrial visual character than plastic or resin buttons would. The engraved branding also functions as a subtle custom detail, while the consistent use of matching black-coated metal hardware helps unify the garment's overall appearance and reinforces its rugged, purposeful construction.

Silhouette and Fit Profile:
- In terms of fit, the trousers are cut with a relaxed-to-loose silhouette, a straight leg, and a mid-to-high rise. The seat and thighs are shaped to provide comfortable room, but the fit is controlled carefully enough that the overall appearance does not become excessively baggy. This creates a balanced straight-leg profile with enough volume to feel easy and natural in wear, while still maintaining a clean outline through the leg. The rise also supports the trouser's utility-inspired proportions, contributing to both comfort and a more stable overall fit.

Design Position Within the Brand:
- This model is a new original release from ONI Denim rather than a simple reproduction of a pre-existing vintage pattern. Its significance lies in how it combines classic styling references with ONI Denim's own signature strengths, particularly in fabric development and material expression. The trousers therefore function not only as a workwear-inspired design, but also as a fabric-driven ONI original that highlights the brand's ability to reinterpret traditional garment categories through its own textile sensibility.

Model Name: 270 (ONI-207HOX-BRK ONI207HOX-BRK)

Care Instructions & Sulfur-Dyed Fabric Notice:
- Machine washable at or below 40°C (104°F). Turn the garment inside out before washing and use a normal wash cycle.
- Do not use chlorine bleach or oxygen bleach.
- Do not tumble dry.
- Hang to dry in the shade.
- Iron at medium temperature with a pressing cloth placed between the iron and the fabric.
- Do not dry clean.
- Due to the nature of sulfur-dyed fabric, color may fade over time. Wash separately and avoid washing with other garments.
- Color transfer may occur when the fabric is wet from sweat or rain, or through friction. Please take care when wearing with light-colored items.