Iron Heart | IHSH-402-NAV | 12oz Ultra Heavy Flannel Chalk Stripe Work Shirt | Navy No Discount made of 10oz canvas and

made of 10oz canvas and only gets better with wear and age

Viewed through a civilian lens

Different shades of colour create an appealingly uniform colour effect

The wax canvas material has been made for the US military by the same family for seven generations

Iron Heart | IHSH-402-NAV | 12oz Ultra Heavy Flannel Chalk Stripe Work Shirt | Navy No Discount made of 10oz canvas andTo a great extent, the ultra heavy flannel (UHF) shirts define Iron Heart: heavy, rugged, but amazingly wearable. The 12oz fabric is woven with Aspero cotton from the foothills of the Andes mountains. They double brush it on the inside and single brush it on the outside, resulting in a very soft yet substantial, thick, warm and windproof flannel. This shirt is a wardrobe staple seen here in the work cut in navy with woven wabash inspired chalk