Jac-shirt, shacket — whatever you call it, a shirt jacket is a quality addition to any cool weather wardrobe. This version from Filson adds fleece lining to the mix for wear in even colder weather. The signature lining appears in the body, while the sleeves get polyfill lining for easy layering. Its rugged 10-oz. cotton canvas is garment-washed for a worn-in feel and is complemented by a snap-front closure, adjustable cuffs, pleated shoulders for added range of motion, and fleece-line handwarmer pockets.