Overshirts and shackets. Overshirts and jackets? No, you know, shirt jackets. A shirt for over a jacket, not quite. It is more of a shirt worn as a jacket. Now that we have cleared that up Percival makes men's overshirts and shackets.
Materials include but not limited too, flannel, checked, corduroy, blanket (yes warm as a blanket, a blanket that can be worn outside!).