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Iron Heart 120J-BLK - Chore Jacket - 12oz Wabash Twill Black
Iron Heart 120J-BLK - Chore Jacket - 12oz Wabash Twill Black

Iron Heart

120J-BLK - Chore Jacket - 12oz Wabash Twill Black

$450.00 $315.00

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Garment Measurements | Virtual Size Chart


The Iron Heart IHJ-120-BLK Wabash Black Twill Chore Jacket is an improved, modern version of the workwear original and serves as a heritage statement piece produced from a 12 oz. medium weight, sanforized, and once-washed right hand twill from Kojima, Japan. Taken from the classic mid-century industrial work jacket, this pattern features a modified body that's been tailored from the traditional examples with reconfigured pocket placement for a better composition and fit resulting in modern-styled grit. A cult collectable fabric within the Iron Heart collection, this 100% cotton twill is woven in a hearty and approachable 12 oz. weight, using black sulfur rope dyed yarns for the warp and weft, and is block printed with a technique using bleach to create the dotted stripe Wabash pattern synonymous with railroad workwear garments of the early 20th century. This fabric has a structured form that will develop into a natural drape, and with a sulfur dyed warp and weft, evolve with remarkable fade-to-grey patterns. Created to be a functional outerwear piece from spring through fall, the 120J Chore features patch flap front snap chest and large lower pockets, a patch workman and interior chest pocket for various tools of the trades, adjustable snap gusseted cuffs, a snapped front placket, and is completed with brass snaps, internal felled seams, and chainstitched construction throughout. This Wabash Chore Jacket strikes the balance between climate and culture appropriate, making it a year-round go-to for a look that will take you from the workshop to wild nights. Built for the biker and over-engineered to start, this jacket tests the limits of what actually can be artfully woven and sewn, delivering a lifetime of durability in an unmistakable design.


  • Standard Fit
  • 12 oz. Japanese Wabash Twill
  • Sanforized - One Wash
  • Black Sulfur Dyed Warp & Weft
  • Wabash Dot Stripe Block Bleach Print
  • 100% Cotton
  • Patch Flap Front Snapped Chest Pocket
  • Patch Snapped Workman Chest Pocket
  • Dual Patch Flap Front Snapped Lower Pockets
  • Interior Chest Pocket
  • Gusseted Adjustable Cuffs
  • Twill Lined Collar, Pocket Trim & Cuffs
  • Brass Buttoned Front Placket, Pockets & Cuffs
  • Locker Loop
  • Internal Felled Seams
  • Chainstitched Throughout
  • Bartack Reinforced
  • Made in Japan


Model Measurements: 5'9" | 150 lbs. | 38" Chest | 32" Waist - Wearing Size S

Iron Heart Outerwear sizing is graded in small increments. The 120J-BLK runs slightly large to Iron Heart sizing and is made with a sanforized, once washed fabric with most shrinkage removed. With regular use, one can expect up to .5-1” of stretch in the chest over the long term. Consider going with your common or smaller of your size range in Iron Heart.

Our Method of measuring is different than Iron Heart. We recommend consulting our Sizing Guide and using our Virtual Size Chart to reference our Method when purchasing.

Please feel free to Contact Us for additional assistance.

About Iron Heart

After 20 years of working in the Japanese garment industry, Shinichi Haraki established Works Inc., a.k.a. Iron Heart, in 2003 as a heavyweight clothing brand initially geared toward Japan’s motorcycling community. Iron Heart creates classic and timeless clothing crafted out of the finest materials and achieves the highest standards by closely working with fabric development, garment manufacturing, and the brand’s cult community. Over the years, Iron Heart has become the definition of bullet-proof garment construction. Staying true to their slogan,... View All Iron Heart Products