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Iron Heart 385-ODG - Military CPO Shirt - 9oz Olive Drab Green Herringbone Twill
Iron Heart 385-ODG - Military CPO Shirt - 9oz Olive Drab Green Herringbone Twill

Iron Heart

385-ODG - Military CPO Shirt - 9oz Olive Drab Green Herringbone Twill


Garment Measurements | Virtual Size Chart


The Iron Heart IHSH-385-ODG Military CPO Shirt is a medium-weight, reinforced piece produced in a 9 oz. Japanese Herringbone Twill that's been sanforized and once washed for a comfortable all-season staple shirt designed to evolve with its wearer. Using an adapted Iron Heart CPO shirt pattern with military details, this piece is perfectly proportioned to be worn untucked as a shirt or overshirt with a square hem and split side seam for vintage-styled grit in a design and fabric that uniquely hallmarks army shirts from the '40s and '50s. Similar to the military issue, this dutiful cloth has been washed for enhanced texture and an aged aesthetic to enhance the broken twill weave from yarns that have been sulfur dyed to fade uniquely when worn as hard as intended. The Military Shirt has numerous and carefully considered construction and design details that improve the original inspiration, like the welted lower hand pockets, buttoned flap front patch chest pockets, button front placket, and cuffs using concave military-grade melamine buttons. Further, a double-needle stitched squared back yoke, felled seams, and chainstitched construction throughout give this piece all the necessary heritage provenance and then some. The Olive Drab Green Herringbone Twill Military Shirt balances classic and modern applications, making it a future heirloom, a year-round go-to, and a substantial staple piece that will only improve with wear. Built for the biker and over-engineered to start, the Iron Heart 385-ODG tests the limits of what can be artfully woven and sewn, delivering a lifetime of durability in a battle-ready design.


  • Standard Fit
  • 9 oz. Japanese Herringbone Twill
  • Sanforized - One Wash
  • Sulfur Dyed
  • 100% Cotton
  • Orange Thread Interior Chainstitching
  • Buttoned Flap Front Chest Pockets
  • Welted Lower Hand Pockets
  • Straight Hem w/ Split Side Seam
  • Button Cuffs
  • Olive Melamine Concave Buttons
  • Felled Seams
  • Chainstitched Throughout
  • Bartack Reinforced
  • Made in Japan


Model Measurements: 5'9" | 165 lbs. | 41" Chest | 34" Waist - Wearing Size L

Iron Heart Shirting sizing is graded in small increments. The 385 Military CPO Shirt runs true to Iron Heart sizing and is made with a sanforized, once washed fabric with all shrinkage removed. With regular use, one can expect little to no stretch or shrinkage 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