Studio D'Artisan Men's 15oz Selvedge Denim Chore Coat Jacket - Made in Japan, Regular Fit, Toyoda GL3 Loom-Woven (SDA D4620, One-Wash)

Studio D'Artisan Men's 15oz Selvedge Denim Chore Coat Jacket - Made in Japan, Regular Fit, Toyoda GL3 Loom-Woven (SDA D4620, One-Wash)

Studio D'artisan

This men's casual denim jacket is made in Japan by Studio D'artisan (SDA), a brand known for its distinctive craftsmanship. It is a modern reinterpretation of a classic American vintage chore coat (work coat), cut from 15 oz heavyweight selvedge denim woven on vintage shuttle looms and developed using the brand's unique fabric-making techniques. Carefully constructed with SDA's signature attention to detail, it delivers the authentic features and rugged character of traditional workwear while fitting naturally into today's casual wardrobe, bridging heritage style with everyday wearability. The fabric used for this model is a non-stretch, 15-ounce selvedge denim made from 100% cotton and woven in a right-hand twill construction. It has a rugged, textured character with pronounced slubbiness, natural surface irregularities, and a richly uneven texture typical of vintage-style denim. The denim is woven on a Toyoda Automatic Loom GL3, a vintage Japanese shuttle loom, using indigo rope-dyed warp yarns paired with undyed natural weft yarns. This combination creates a deep indigo base accented by visible white neps, where the natural weft yarns subtly peek through the surface. Organic speckling and softly mottled patterns appear throughout the fabric, giving it a distinctive, cloud-like depth. The denim retains its original hairy fibers, capturing the soft fuzziness associated with authentic vintage denim. This characteristic texture is achieved through Studio D'Artisan's signature weaving techniques, which emphasize irregularity and depth rather than uniformity. Selvedge detailing is visible along the inner edge of the front placket as well as on the locker loop at the back neck. A branded leather patch is attached to the inner neck area. As part of the finishing process, the garment is pre-washed (one-wash) to help minimize shrinkage after purchase. In terms of design and construction, this jacket features a standard point collar without a collar stand (collar band), set-in sleeves, a five-button metal front closure with Studio D'artisan-branded buttons, and a total of five pockets: one right-chest flap pocket with a button closure, one left-chest patch pocket, two waist patch pockets, and one inside pocket on the right side. The sleeves are finished with single-button cuffs reinforced with double-needle stitching, and the back is constructed from two panels with a center seam. This jacket is offered in U.S./EU sizing and cut in a regular fit, giving it a balanced silhouette that is easy to wear for everyday casual style. As a lightweight, unlined outer layer with no insulation, it has just enough room to layer comfortably over a sweatshirt or hoodie during the in-between seasons. This is a new original Studio D'Artisan release that combines classic styling with the brand's signature craftsmanship.

Gender: Men.

Fit: This jacket is offered in U.S./EU sizing and cut in a regular fit, giving it a balanced silhouette that is easy to wear for everyday casual style. As a lightweight, unlined outer layer with no insulation, it has just enough room to layer comfortably over a sweatshirt or hoodie during the in-between seasons. 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.

Our model is wearing a size 36. He stands 5'9" (175 cm) tall, weighs 127 lbs (58 kg), and has a 36-inch (91 cm) chest. He typically wears a US/EU size S (36) in most garments.

Available Sizes.

･Size 36: Often a good starting point for those who wear S in US/EU sizing or size 36 in tops.

･Size 38: Often a good starting point for those who wear M in US/EU sizing or size 38 in tops.

･Size 40: Often a good starting point for those who wear L in US/EU sizing or size 40 in tops.

･Size 42: Often a good starting point for those who wear XL in US/EU sizing or size 42 in tops.

･Size 44: Often a good starting point for those who wear XXL in US/EU sizing or size 44 in tops.

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.

In inches
･Size 36__Width: 21.3"__Length: 27.6"__Sleeve: 31.5"(23.2")__Shoulder: 16.5"
･Size 38__Width: 22.0"__Length: 28.3"__Sleeve: 32.3"(23.6")__Shoulder: 17.3"
･Size 40__Width: 22.8"__Length: 29.1"__Sleeve: 33.5"(24.4")__Shoulder: 18.1"
･Size 42__Width: 23.6"__Length: 29.9"__Sleeve: 34.3"(24.8")__Shoulder: 18.9"
･Size 44__Width: 24.8"__Length: 30.7"__Sleeve: 35.0"(25.2")__Shoulder: 19.7"

In centimeters
･Size 36__Width: 54cm__Length: 70cm__Sleeve: 80cm(59cm)__Shoulder: 42cm
･Size 38__Width: 56cm__Length: 72cm__Sleeve: 82cm(60cm)__Shoulder: 44cm
･Size 40__Width: 58cm__Length: 74cm__Sleeve: 85cm(62cm)__Shoulder: 46cm
･Size 42__Width: 60cm__Length: 76cm__Sleeve: 87cm(63cm)__Shoulder: 48cm
･Size 44__Width: 63cm__Length: 78cm__Sleeve: 89cm(64cm)__Shoulder: 50cm

Width is half chest: Lay the clothing flat and measure 3 cm under the armhole. Measure from side to side.

Sleeve is measured from center back of base of collar seam to the end of the cuff.

Sleeve length in parentheses is measured from top of the shoulder seam to end of cuff.

Shoulder Width: Measured straight across the back from the tip of one shoulder seam to the other.

Body Length: Measured from the base of the back collar (where the collar meets the body) straight down to the bottom hem.

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.

Fabric Type: The fabric used for this model is a non-stretch, 15-ounce selvedge denim made from 100% cotton and woven in a right-hand twill construction. It has a rugged, textured character with pronounced slubbiness, natural surface irregularities, and a richly uneven texture typical of vintage-style denim. The denim is woven on a Toyoda Automatic Loom GL3, a vintage Japanese shuttle loom, using indigo rope-dyed warp yarns paired with undyed natural weft yarns. This combination creates a deep indigo base accented by visible white neps, where the natural weft yarns subtly peek through the surface. Organic speckling and softly mottled patterns appear throughout the fabric, giving it a distinctive, cloud-like depth. The denim retains its original hairy fibers, capturing the soft fuzziness associated with authentic vintage denim. This characteristic texture is achieved through Studio D'Artisan's signature weaving techniques, which emphasize irregularity and depth rather than uniformity. With continued wear, the denim softens and conforms to the body, while developing natural fades and patina that enhance its character over time.

Lining/Insulation: None (unlined, no insulation). Built as a true single-layer outer shell using one ply of 15 oz. 100% cotton selvedge denim, with no separate lining fabric, batting, quilt layer, or thermal fill. The interior exposes the denim's reverse side and seam construction, maintaining a lightweight, breathable work-coat style structure. Designed for transitional wear in mild to cool conditions (spring and fall) and ideal for layering over a T-shirt, chambray shirt, long-sleeve tee, sweatshirt, or hoodie without added bulk.

Front Closure: Five-button placket with Studio D'Artisan-branded metal buttons in an antique finish. Buttonholes are cut horizontally for added strength and reduced stress on the fabric.

Pockets: Five-pocket layout in total: one right-chest flap pocket secured with a button closure, one left-chest patch pocket, two lower front waist patch pockets (one on each side), and one interior pocket positioned on the right side. The interior pocket opening is finished with selvedge detailing (selvedge-edged construction) for an added heritage detail. The four exterior pockets are reinforced at key stress points, with additional reinforcement stitching at the upper corners to help prevent seam failure and tearing from frequent hand entry and carried weight.

Collar Type: Shirt-style fold-down (turn-down) collar constructed without a separate collar stand (collar band). The collar is attached directly to the neckline, allowing it to sit low and lie flat against the body for a clean, relaxed work-coat profile. This standless construction reduces bulk and rigidity at the neck, minimizes pressure around the throat when buttoned up, and helps the collar naturally follow the neckline for comfortable, everyday wear.

Cuff Type: Single-button cuffs secured with a button-and-buttonhole closure, paired with a functional sleeve placket (cuff slit) to increase the opening and allow easier hand entry and removal. The cuff and placket edges are reinforced with double-needle stitching to stabilize the seam lines, reduce fraying at high-wear points, and improve long-term durability through repeated fastening and movement.

Length Type: Hip-length jacket, cut to end around the upper hip for easy everyday wear and balanced proportions over layered tops.

Back: Two-panel back construction joined by a center back seam for clean shaping and a stable, workwear-correct build.

Sleeves: Set-in sleeves with a two-piece sleeve construction (seamed panel design) to improve arm articulation, maintain sleeve shape, and reinforce structure through the elbow and forearm during movement.

Sleeve Length: Full-length long sleeves designed for coverage and practical layering.

Other Details: A Studio D'Artisan woven brand label is sewn above the left chest pocket as an exterior accent detail. Inside the neck, a selvedge-finished locker loop is installed for convenient hanging and storage.

Model name: Studio D'artisan (SDA) D4620 denim chore coat made with Japanese selvedge denim, woven on the old Toyoda GL-3 Power Loom / Men's Casual Fashion Denim Jacket - Modern reproduction of the work jacket / Mens replica of the denim engineer jacket / Reissue of the denim coverall jacket for men / Lightweight outerwear jean jacket.


Toyoda Automatic Loom Works GL-3 (GL3) Shuttle Loom

An Early Motor-Driven Japanese Shuttle Loom
The GL-3 was produced by Toyoda Automatic Loom Works in the postwar era (often associated with the 1950s) and is regarded as an early example of Japan's motor-driven shuttle looms. Production was limited, and surviving machines are uncommon today, which contributes to its reputation among vintage-denim makers.

Maintenance-Intensive by Nature
Keeping a GL-3 running requires specialized knowledge and hands-on upkeep. With original replacement parts no longer readily available, repairs often rely on compatible components sourced from other retired looms and careful adjustment by experienced technicians. Without regular attention, the loom can easily drift out of optimal operation.

Slow Output, Small-Batch Suitability
Compared to modern high-speed looms, the GL-3 operates at a much slower weaving pace (often cited as only a few meters per hour). While inefficient for mass production, this slow, controlled output is well-suited to small-batch fabrics where character and texture are prioritized over volume.

Why It Is Sometimes Nicknamed a "Phantom Loom"
Among denim enthusiasts, the GL-3 is often nicknamed a "phantom loom" because of both its rarity and the distinctive fabric character it can produce. Its mechanical behavior and slower operation tend to yield an uneven, vintage-like surface that is difficult to replicate on modern high-speed equipment.

The Appeal of GL-3-Woven Denim

Vintage-Like Surface Texture
Because the loom runs slowly and can be tuned with relatively low yarn tension, the fabric often shows natural irregularities such as slubs, subtle density variation, and an organic, uneven hand that reads as authentically vintage.

Substantial Hand and Visible Character
GL-3-woven denim is often described as rugged and textured, with pronounced slubbiness, tonal irregularity, and a naturally neppy surface. With wear, it breaks in progressively and develops a rich patina as the fabric softens and conforms to the wearer.

Craftsmanship Through Loom-Specific "Recipes"
To fully express the GL-3's characteristics, makers may tailor yarn thickness, rope-dye parameters, indigo shade, and weave density specifically for this loom. These controlled choices help translate the loom's mechanical "signature" into visible texture and depth in the finished denim.

A Symbol of Craft Over Efficiency
Denim woven on a GL-3 reflects a production philosophy that values hands-on adjustment, irregularity, and character rather than speed and uniformity. Each roll requires ongoing monitoring and fine tuning, making human skill an essential part of the final fabric quality.

The Toyoda GL-3 is more than a vintage machine. Its limited availability, maintenance demands, and slow output make it impractical by modern standards, yet those same constraints help produce denim with a uniquely vintage surface. The fabric it creates carries not only physical texture, but also the imprint of careful control, patience, and craft.


Care Instructions
･Machine wash cold to warm (up to 104°F / 40°C) on a gentle cycle.
･Do not use bleach (no chlorine bleach or oxygen bleach).
･Do not tumble dry.
･Iron on low to medium heat (up to 300°F / 150°C) with a pressing cloth.
･Do not dry clean.


Handling Indigo-Dyed Products

･This product is dyed with indigo. Indigo dye is designed to fade with wear and washing, and some color transfer (dye rub-off) may occur.
Please understand this as a natural characteristic of indigo-dyed fabric, and handle with care, especially during the first few wears and washes.

･Be cautious of color transfer caused by friction (crocking)
During wear, dye may transfer to other garments or items through rubbing, such as light-colored clothing, bags, upholstery, chairs, car seats, or other surfaces.
Please take extra care when pairing with white or light-colored items.

･Washing instructions
Indigo dye may transfer during washing, so we recommend washing separately.
To help reduce surface abrasion and uneven fading, turn the garment inside out before washing.
Use cold water and a gentle cycle with a mild detergent. Avoid scrubbing, soaking with other items, and do not use bleach.
After washing, reshape if needed and air dry naturally. Repeated washing will gradually help stabilize excess dye.

･Be mindful of water and sweat
Moisture from sweat or rain can make color transfer more likely. If the garment becomes damp, avoid contact with light-colored items until fully dry.

･Drying and sunlight
To minimize discoloration and excessive fading from light exposure, dry the garment inside out and preferably in the shade or out of direct sunlight.

Please handle with care and enjoy the unique aging and character of indigo-dyed products.