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Iron Heart 329-BRN - Work Shirt - 7oz Chino Twill Brown
Iron Heart 329-BRN - Work Shirt - 7oz Chino Twill Brown

Iron Heart

329-BRN - Work Shirt - 7oz Chino Twill Brown


Garment Measurements | Virtual Size Chart


The Iron Heart IHSH-329-BRN Work Shirt is a hearty, reinforced piece produced from a sanforized and rinsed 7 oz. Japanese Twill Chino cloth that's appropriate as a style staple for year-round use. Using the signature Iron Heart Work Shirt pattern, this piece is perfectly proportioned in length to be worn untucked for modern, vintage-styled grit. Designed to be a great base layer, tonal stitching and details combine with this military inspired twill weave that has a consistent finish and structured form, and is reactive dyed to maintain its color through repeated wearing and washing to convey a commanding rank in a versatile burnt brown colorway. This Work Shirt has numerous and carefully considered construction and design details like the squared shoulder and back yoke panel, which is paired with tonal brown Iron Heart cats eye buttons on the front placket, dual patch front chest pockets with pencil slot, and buttoned cuffs to comprise a piece for the stylistically sound and self-reliant. Further, internal felled seams and chainstitched construction with inseam run-off give this piece all the necessary heritage provenance, and then some. The Brown Chino Twill Work Shirt strikes the balance between classic and modern applications, making it a future heirloom, a year-round go-to, and a substantial staple piece that will only get better with wear. Built for the biker and over-engineered to start, the Iron Heart 329-BRN Work Shirt tests the limits of what actually can be artfully woven and sewn, delivering a lifetime of durability in a work-ready design.


  • Standard Fit
  • 7 oz. Japanese Chino Twill
  • Sanforized - One Wash
  • Reactive Dyed
  • 100% Cotton
  • Dual Button Front Chest Pockets
  • Pencil Slot Chest Pocket
  • Back Yoke Panel
  • Button Cuffs
  • Brown Cats Eye Buttons
  • Felled Seams
  • Chainstitched Throughout & Run-off
  • Bartack Reinforced
  • Made in Japan


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

Iron Heart Shirting sizing is graded in small increments. The 329-BRN runs on the small side of 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” of stretch in the chest over the long term.

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

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