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Iron Heart 21-BLU - Work Shirt - 10oz Selvedge Chambray Blue
Iron Heart 21-BLU - Work Shirt - 10oz Selvedge Chambray Blue

Iron Heart

21-BLU - Work Shirt - 10oz Selvedge Chambray Blue


Garment Measurements | Virtual Size Chart


The Iron Heart IHSH-21-BLU Work Shirt is a medium weight, reinforced piece produced from a 10 oz. sanforized and rinsed Japanese Selvedge Chambray 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. White contrast stitching combines with the blue reactive dyed warp and weft to create a textured, bright blue Chambray that will soften and wear-in without any significant fading to convey workshop class in a versatile and consistent vintage-inspired palette. This Work Shirt has numerous and carefully considered construction and design details like the triple stitched squared shoulder and back yoke panel, which is paired with signature Iron Heart cats eye buttons on the front placket and dual patch front chest pockets with pencil slot, comprising a piece for the stylistically sound and self-reliant. Further, selvedge line reveals on the placket and cuffs, internal felled seams, and chainstitched construction with inseam run-off give this piece all the necessary heritage provenance, and then some. The Blue Selvedge Chambray 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 21-BLU 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
  • 10 oz. Japanese Selvedge Chambray
  • Sanforized - One Wash
  • Red Selvedge Line
  • Blue Reactive Dyed Warp & Weft
  • 100% Cotton
  • Contrast Stitching
  • Dual Button Front Chest Pockets
  • Pencil Slot Chest Pocket
  • Triple Stitch Back Yoke Panel
  • Interior Placket and Cuffs Selvedge Line
  • Button Cuffs
  • White Cats Eye Buttons
  • Felled Seams
  • Chainstitched Throughout & Run-off
  • Bartack Reinforced
  • Made in Japan


Model Measurements: 5'8" | 165 lbs. | 40" Chest | 34" Waist - Wearing Size M

Iron Heart Shirting sizing is graded in small increments. The 21-BLU runs true 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” of stretch in the chest over the long term.

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