The ultra-heavy duty (UHF) flannel shirts largely define Iron Heart, they are heavy, tough, yet amazingly wearable. This western shirt is an exclusive 12oz green tartan check fabric woven from Aspero cotton from the foothills of the Andes. It is double brush on the inside and single on the outside, resulting in a very soft yet strong, thick, warm and windproof flannel.

• Western shirt
• Iron Heart original 12oz ultra-heavyweight green tartan check cotton flannel
• Aspero cotton
• UHF (ultra heavy flannel)
• Single brushed on face and double brushed on reverse
• White Iron Heart logo’d Permex snaps 
• Two external snap fastened chest pockets
• Single, double and triple needle stitch construction
• Yellow bobbin thread
• One-washed, but could shrink up to half a size with continual or very hot washing/tumble drying
• Model Shane wears Large, is 180 cm tall and 78 kg
• Made in Japan