Certain to be a huge hit with those fans of Filson's Alaskan Guide Shirt, the new Northwest Wool Shirt is a blend of wool and nylon for increased durability as well as insulation that keeps you warm even when it's wet. Cut with a little extra room for mobility in the field. The center back pleat allows a full range of motion whether you’re working, hiking, hunting or fishing. Dry Clean. We think you'll agree with our selection of the Brown/Rust/Navy colorway.