Iron Heart 12oz Ultra Heavy Flannel Vintage Check Work Overshirt - Green / IHSH-428

The Iron Heart 12oz Ultra Heavy Flannel Vintage Work Overshirt in Green Check embodies the brand’s core DNA—substantial, warm, and made to last. Woven from 12oz Aspero cotton, a rare wild cotton native to the foothills of the Andes, the fabric offers both natural strength and an incredibly soft touch. It’s double brushed inside and single brushed outside, creating a dense weave that’s wind-resistant yet surprisingly comfortable.

Designed as a true overshirt, the IHSH-428-GRN features a slightly relaxed silhouette with a straight hem, split-seam gussets, and twin chest pockets with pen holder. Reinforced stitching and poly/cotton thread ensure long-term durability. This flannel transitions seamlessly between outerwear and layering piece—ideal for fall and winter.

Handmade in Japan by WORKS Inc., it captures Iron Heart’s uncompromising approach to craftsmanship and function.

• Iron Heart Ultra Heavy Flannel Vintage Check Work Overshirt
  
• IHSH-428-GRN
  
• Green
  
• Relaxed Fit
  
• 100% Aspero Cotton
  
• 12oz Ultra Heavy Flannel
  
• Reactive Dyed (No Color Loss)
  
• Single-, Double- & Triple Needle Construction
  
• Single & Double Brushed
  
• Four-Hole Black Resin Buttons
  
• Felled Seams
  
• One Wash: Minimal Shrinkage
  
• Made In Japan

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