The Dry Tin Cloth Jac-Shirt is a barrier against wind, briars, and brush with minimal bulk. This Jac-Shirt is made with the unwaxed version of Filson's iconic canvas that’s sheltered foresters and sportsmen in the backcountry for a century. The 10.5-oz. 2-ply by 2-ply cotton duck canvas is renowned for its exceptional abrasion resistance. Treated with a long-lasting DWR, it repels light rain and resists staining. An extra layer over the front shoulders provides additional protection and hides the two snap-secure chest pockets.