At the end of the 1800s, Filson founder Clinton C. Filson was manufacturing rugged workwear for miners and prospectors in the Pacific northwest. And with the introduction of the C.C.F. collection, Filson is bringing back a line of tough workwear in the same spirit. Made with extra durable materials —cotton duck and rugged canvas—and overbuilt details like triple stitching, reinforcing rivets and double-layer knees, the collection includes, pants, vests, jackets, and more.