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Iron Heart 372-BRN - Western- 12oz Ultra Heavy Flannel Crazy Check Brown
Iron Heart 372-BRN - Western- 12oz Ultra Heavy Flannel Crazy Check Brown

Iron Heart

372-BRN - Western- 12oz Ultra Heavy Flannel Crazy Check Brown


Garment Measurements | Virtual Size Chart


The Iron Heart IHSH-372-BRN Western is produced in Japan from a 12 oz. Ultra Heavy Flannel and has a double brushed interior to yield a soft hand in an extremely hardy fabric, coming in a complex, crazy check of espresso, gold, and off-white on a brown field to provide a standout palette and pattern. Made from a rare Aspero wild and organic cotton plant found only in the foothills of Northeast Peru, the yarn yields remarkable softness, unmatched strength, and has been treasured by the area’s indigenous population for generations. Using the signature Iron Heart Western pattern of a slim fit based on the 1926 original, this shirt is perfectly proportioned in length to be worn untucked for modern, vintage-styled grit. This Western has numerous and carefully considered construction and design details like the triple stitched curved shoulder and back yoke panels that are paired with signature Iron Heart black Permex snaps on the dual flap front chest pockets, placket, and cuffs to make a piece for the stylistically sound and self-reliant. Internal felled seams and chainstitched construction give this piece all the necessary heritage provenance, and then some. The Ultra Heavy Flannel Crazy Check Western balances classic and modern applications, making it a future heirloom with endless fall through spring applications. Built for the biker and over-engineered to start, the Iron Heart 372-BRN once again tests the limits of what can be artfully woven and sewn, delivering a lifetime of durability in a road-ready design.


  • Modern Fit
  • 12 oz. Ultra Heavy Weight Flannel
  • Proprietary Fabric
  • Once Washed
  • Single Brushed Face & Double Brushed Interior
  • Peruvian Organic Cotton Aspero Yarn
  • 100% Cotton
  • Red Thread Interior Chainstitching
  • Dual Snap Front Chest Pockets
  • Triple Stitch Front & Back Yoke Panels
  • Dual Snap Cuffs
  • Black & Nickel Permex Snaps
  • Felled Seams
  • Chainstitched Throughout
  • Bartack Reinforced
  • Limited Release
  • Made in Japan



Model Measurements: 5'9" | 150 lbs. | 38" Chest | 32" Waist - Wearing Size S

Iron Heart Shirting sizing is graded in small increments. The 372-BRN runs true to Iron Heart sizing and is made with a once-washed, brushed flannel fabric. With regular use, one can expect up to .5-1” of shrinkage 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