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Iron Heart 526J-SL - Modified Type III - 17oz Natural Indigo Selvedge Denim & Fleece Lined
Iron Heart 526J-SL - Modified Type III - 17oz Natural Indigo Selvedge Denim & Fleece Lined

Iron Heart

526J-SL - Modified Type III - 17oz Natural Indigo Selvedge Denim & Fleece Lined

$600.00 $450.00

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Garment Measurements | Virtual Size Chart


The Iron Heart IH-526J-SL Fleece Lined Modified Type III Jacket is an improved, modern version of the old school ranch-ready statement piece produced from a 17 oz. sanforized and once-washed 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, and comes fully lined with a fleece body and quilted satin sleeves for a medium weight, insulated outerwear piece with modern styled grit. This substantial 100% cotton selvedge denim is woven via vintage shuttle looming, uniquely using a natural indigofera plant dyed warp and a natural colored weft with a subtle grey cast that will hold its color while providing subtle vintage blue fading patterns. In a hearty 17 oz. weight that's been washed for flexibility and softness, this fleece lined, natural indigo Trucker is resilient and approachable, allowing immediate wearability without a prolonged break in. Created to be a functional fall-spring outerwear piece, the 526J Trucker features a tan corduroy collar that corresponds to contrast stitching, slash front pockets, welted chest pockets with buttoned flaps, a button back waist adjustment and cuffs, a buttoned front placket with interior selvedge line reveal, and internal felled seams and chainstitched construction throughout. This fleece lined 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
  • 17 oz. Japanese Selvedge Denim
  • Sanforized - One Wash
  • Red Selvedge Line
  • Natural Indigofera Plant Dye
  • Indigo Rope Dyed Warp & White Weft
  • 100% Cotton Denim
  • 60% Acrylic / 40% Polyester Fleece Lined Body
  • Quilted Satin Lined Sleeves
  • Tan Corduroy Collar
  • Contrast Stitching
  • Dual Welted Button Flap Chest Pockets
  • Welted Front Slash Pockets
  • Interior Placket Selvedge Line
  • Zinc Buttoned Front Placket & Cuffs
  • Buttoned Back Tab Adjustable Hem
  • Internal Felled Seams
  • Chainstitched Throughout
  • Bartack Reinforced
  • Made in Japan


Model Measurements: 5'10" | 170 lbs. | 41" Chest | 32" Waist - Wearing Size L

Iron Heart Outerwear sizing is graded in small increments, and the 526J-SL runs on the small side of Iron Heart sizing, is made with a sanforized, once washed fabric with most shrinkage removed, and as a fully lined piece that will remain static and not stretch 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