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Iron Heart 388-BLU - Short Sleeved Summer Shirt - 4oz Japanese Selvedge Blend Blue
Iron Heart 388-BLU - Short Sleeved Summer Shirt - 4oz Japanese Selvedge Blend Blue

Iron Heart

388-BLU - Short Sleeved Summer Shirt - 4oz Japanese Selvedge Blend Blue


Garment Measurements | Virtual Size Chart


The Iron Heart IHSH-388-BLU Short Sleeved Summer Shirt in Blue is a lightweight, reinforced piece produced from a 4 oz. sanforized and rinsed Japanese Selvedge Chambray Blend that's appropriate as a warm weather style staple. Based on the new Iron Heart Mechanics Shirt pattern, this Summer Shirt is perfectly proportioned and made to be worn untucked with a straight hem and split side seam combined with tack-stitched cuffs for vintage-styled grit, saluting shop shirts from the 50s. Loomed in Japan, this plain weave — akin to a chambray — is made in an 87% Cotton, 7% Linen, and 6% Rayon blend that yields a lightweight, breathable, and durable fabric with a slight slub texture and luxurious drape. The Summer Shirt has numerous and carefully considered construction and design details that improve the original inspiration, like contrasting white stitching coordinated with white concave military-grade melamine buttons on the buttoned flap front chest pockets and front placket. Further, a red selvedge line reveal on the interior placket, combined with felled seams and chainstitched construction with bartack reinforcements throughout, give this piece all the necessary heritage provenance and then some. The Blue Selvedge Summer Short Sleeved Shirt strikes a 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 388-BLU tests the limits of what can be artfully woven and sewn, delivering a lifetime of durability in a service-ready design.


  • Standard Fit
  • 4 oz. Japanese Plain Weave Chambray Blend
  • Sanforized - One Wash
  • Red Selvedge Line
  • Reactive Dyed Warp & Weft
  • 87% Cotton / 7% Linen / 6% Rayon
  • Short Sleeve w/ Tacked Cuff
  • Contrast White Stitching
  • Dual Button Flap Front Chest Pockets
  • Straight & Side Split Hem
  • Interior Placket Selvedge Line
  • White Melamine Concave Buttons
  • Felled Seams
  • Single & Double Needle Construction
  • Bartack Reinforced
  • Limited Release
  • 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 388 Summer Shirt 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