Our classic work shirt, cut from a lightweight 7oz cotton/linen chambray. By blending 65% cotton and 35% linen, this creates a softer, more breathable chambray fabric while maintaining the rugged characteristics expected of an Iron Heart fabric. The warp yarns are indigo-dyed and paired with a 100% linen light grey weft, giving the fabric a dark indigo hue when new, which will lighten and fade with beautiful vintage character as the shirt ages.

This model features all the hallmarks of Iron Heart's work shirt cut — button fastenings, a chest pocket pen holder, and side seam gussets with chainstitch runoff — but with upgraded triple-stitched side, arm, and shoulder seams for enhanced durability. Finished with tonal stitching and internal yellow bobbin thread for a subtle splash of colour.

• Made in Japan
• Work Shirt
• 7oz Japanese chambray
• 65% Cotton/35% linen
• Indigo rope dyed warp / 100% linen top-dyed grey weft - will fade with wear and washing
• Tonal stitching
• Black four-hole buttons
• Classic patch pockets with button fastenings and pen holder
• Single, double and triple needle stitch construction
• Straight back yoke
• Felled internal seams
• Side seam gussets with chainstitch run-off
• Yellow bobbin thread
• One-washed - no shrinkage expected