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Iron Heart 317-YEL - Work Shirt - 9oz Selvedge Flannel Ombre Check Yellow
Iron Heart 317-YEL - Work Shirt - 9oz Selvedge Flannel Ombre Check Yellow

Iron Heart

317-YEL - Work Shirt - 9oz Selvedge Flannel Ombre Check Yellow


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Garment Measurements | Virtual Size Chart


The Iron Heart IHSH-317-YEL Work Shirt is a heavyweight, reinforced piece produced from a once washed 9 oz. Japanese Selvedge Unbrushed Flannel that's appropriate for year-round use with a sophisticated yellow and green ombre check on a deep indigo field to provide an updated and versatile pattern in a traditional workwear palette. Using extremely dark rope dyed indigo yarns that read almost black, which are accented with sulfur dyed shades of green and yellow for a classic palette designed to evolve, this shirt will convey that workshop class through fading and patina potential. Using the signature Iron Heart Work Shirt pattern, this piece is perfectly proportioned in terms of length to be worn untucked for modern-vintage styled grit. This Work Shirt has numerous and carefully considered construction and design details like the squared shoulder and back yoke panel, which is paired with signature Iron Heart vintage black cats eye buttons on the dual patch front chest pockets with pencil slot, placket, and cuffs to make a piece for the stylistically sound and self-reliant. Further, red selvedge line reveals, internal felled seams, and red thread chainstitched construction with inseam run-off give this piece all the necessary heritage provenance, and then some. The Selvedge Flannel Ombre Check Work Shirt strikes the balance between classic and modern applications, making it a future heirloom, a year-round go-to, and a new project piece that will only get better with wear. Built for the biker and over-engineered to start, the Iron Heart 317-YEL tests the limits of what actually can be artfully woven and sewn, delivering a lifetime of durability in a workshop-to-street ready design.


  • Standard Fit 
  • 9 oz. Japanese Selvedge Unbrushed Flannel 
  • Once Washed
  • Red Selvedge Line
  • Rope Dyed Indigo & Sulfur Dyed Yellow & Green
  • 100% Cotton
  • Red Thread Interior Chainstitching
  • Dual Button Front Chest Pockets
  • Pencil Slot Chest Pocket
  • Back Yoke Panel
  • Interior Placket and Cuffs Selvedge Line
  • Button Cuffs
  • Black Cats Eye Buttons
  • Felled Seams
  • Chainstitched Throughout & Run-off
  • Bartack Reinforced
  • Made in Japan


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

Iron Heart Shirting sizing is graded in small increments. The 317-YEL runs true to Iron Heart sizing and is made with a once washed, unbrushed flannel fabric. With regular use, one can expect up to .5” of shrinkage 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 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