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Studio D'Artisan SP-031 - Relaxed Tapered 40th Gent Natural Indigo
Studio D'Artisan SP-031 - Relaxed Tapered 40th Gent Natural Indigo
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Studio D'Artisan

SP-031 - Relaxed Tapered 40th Gent Natural Indigo


Garment Measurements | Virtual Size Chart


The Studio D’Artisan SP-031 is a 40th Anniversary collection piece made in the new Relaxed Tapered fit with a true high rise, featuring a roomy seat and thigh with a strongly tapered leg and a narrow hem. This jean is made with a unique 15 oz. unsanforized Japanese Selvedge denim dyed using a Kasezome pot yarn method with a natural indigo plant from India that creates a color variation in this vintage blue, which is representative of denims before synthetic indigos. This denim is produced on one of Japan’s most notable shuttle looms in an all-season fabric that has a medium tension, slight slub, and a silver cast that yields comfort, structure, and vertical vintage style fading. Made in SDA’s newest Relax Tapered fit, the 40th Gent Jeans are adapted in this original fabric with a modern trouser-like fit with a higher rise, wider thigh, and a drastic taper with tailoring details like a lined yoke, interior taped fly seams, and a rolled waist band for a fully finished and well constructed jean. This rare and intricately produced denim hallmarks originals from the 50's with two-tone highlighted stitching, in a shrink-to-fit fabric that will form to the body after first wash or soak and produce tonal blue fading patterns. Topped off with specialty Studio D’Artisan 40th Collection finishings like an embossed pony hair leather patch and herringbone twill pocket bags along with signature details like embossed copper riveting, a nickel plated brass button fly, and a chainstitched waist, seat, and hem, these jeans are your first step on a journey into the past by way of present styles, transported to you by a standout 40-year-old producer of heritage denim.


  • 40th Anniversary Collection
  • Relaxed Tapered (08) Fit 
  • High Rise, Tapered Fit
  • Roomy Seat, Broad Thigh, Tapered Leg w/ Narrow Hem
  • 15 oz. Natural Indigo Japanese Shuttle Loom Denim
  • Unsanforized - Raw Unwashed
  • Red Selvedge Line
  • Indigo Warp/Natural Weft
  • Kasezome Pot Dyed Yarn
  • Natural Indian Plant Indigo
  • 100% Cotton
  • Nickel Plated Brass Button Fly
  • Engraved Copper Rivets
  • Herringbone Twill Pocket Bags
  • Rolled Waistband
  • Taped Interior Fly Placket
  • Canvas Lined Back Yoke
  • Embossed Pony Hair Leather Patch
  • Chainstitched Waistband, Yoke, Seat & Hem
  • Bartack Reinforced
  • Rolled & Tucked Belt Loops
  • Made in Japan


Model Measurements: 5'11" | 165 lbs. | 40" Chest | 32.5" Waist - Wearing Size 31

Studio D'Artisan Denim runs slightly large, and for the 40th Gent jeans we suggest sizing down roughly 1-2 sizes from your actual waist size. This denim is unsanforized “Shrink-to-Fit” and our rule is: size in order to have enough space to fit your hand in the waistline (+1-1.5" from normal), allowing for natural shrinkage (roughly 1.5” in the Waist and 2” in Length) from the cold soak/rinse process before wearing.

We recommend consulting our Sizing Guide and using our Virtual Size Chart.

Please feel free to Contact Us for additional assistance.

About Studio D'Artisan

Born almost forty years ago in response to the mass production boom in 1979, Studio D’Artisan is one of the original Japanese manufacturers that embraced shuttle loom selvedge denim production as the western world adopted larger, more efficient, and lower quality loom technology. Regarded as one of the original players in the reproduction movement, Studio D’Artisan brings French design and workwear influence to Japanese handmade craftsmanship with one-roof production in Okayama, Japan. Using only vintage shuttle looms, the company produces... View All Studio D'Artisan Products