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Iron Heart 526J-142IB - Modified Type III - 14oz Selvedge Denim Indigo x Black
Iron Heart 526J-142IB - Modified Type III - 14oz Selvedge Denim Indigo x Black

Iron Heart

526J-142IB - Modified Type III - 14oz Selvedge Denim Indigo x Black


Garment Measurements | Virtual Size Chart


The Iron Heart IH-526J-142IB Modified Type III Jacket is an armor-like statement piece produced from a 14 oz. medium weight, sanforized and once washed right hand twill Selvedge Denim from Kojima, Japan. Taken from the classic Type III Trucker Jacket, this pattern features a modified body that's been lengthened beyond the belt line for modern styled grit. A newer fabric within the Iron Heart collection, this 100% cotton denim is woven via vintage shuttle looming using their signature dual twisted weft yarn method to add structure and a slub texture that softens to the body for a remarkable "least heavy" 14 oz. weight fabric in a medium tension weave that has a natural drape and retains its form through years of wear with unmatched durability and performance. Featuring an indigo rope dyed warp and black sulfur dip dyed weft over heavy white core yarn, the result is a highly saturated navy denim that will fade with a high contrast in steely shades of electric blues. Created to be both a layering or outerwear piece, the Trucker features slash front pockets, a buttoned front placket with interior selvedge line reveal, welted chest pockets with buttoned flaps, internal felled seams, and chainstitched construction throughout. This Modified Type III strikes the balance between climate and culture appropriate, making it a year-round go-to for a look that packs a punch. 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.


  • Modern Fit
  • Modified with Longer Body
  • 14 oz. Japanese Mid Tension Indigo Black Selvedge Denim
  • Sanforized - One Wash
  • Double Twisted Weft Yarn
  • Indigo Rope Dyed Warp & Black Sulfur Dip Dyed Weft
  • 100% Cotton
  • Unlined
  • Dual Welted Button Flap Chest Pockets
  • Welted Front Slash Pockets
  • Interior Placket & Cuffs Selvedge Line
  • Zinc Buttoned Front Placket & Cuffs
  • Buttoned Back Tab Adjustable Hem
  • Internal Felled Seams
  • Chainstitched Throughout
  • Bartack Reinforced
  • Made in Japan


Model Measurements: 6'2" | 175 lbs. | 41" Chest | 32.5" Waist - Wearing Size XL

Iron Heart Outerwear sizing is graded in small increments. The 526J-142IB 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 .5-1” of stretch in the chest over the long term. Consider going with your common or the larger of your size range in Iron Heart.

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 garment industry in Japan, Shinichi Haraki established Works Inc a.k.a. Iron Heart in 2003 as a heavyweight Japanese clothing brand, initially aimed at the Japanese motorcycling community. Over the years and in partnership with the UK heritage community, the brand has become the pinnacle definition of bullet-proof garment construction. Originally made for bikers, Iron Heart pushes the design and construction of the clothing to the limit of what can actually be woven and... View All Iron Heart Products