This is a basic work jacket, short enough to be worn with a tool belt and sturdy enough to protect you from wind, rain and abrasion for as long as you wear it. Comes with an internal zipper made to fit any of Filson's Outfitter Vest/Liners for extra warmth. Collar is lined with 24 oz. Mackinaw Wool Cloth. The Oil Finish Tin Cloth is completely soaked in a paraffin-based wax, which provides long-term water repellency and wind resistance. Although stiff at first, this exceptionally heavy-duty fabric softens with use. Action Back for complete freedom of movement. Can use Style 635H with this jacket. Clean by wiping or brushing only -- gains character with use. 100% cotton Tin Cloth - Oil Finish - 12.5 oz.