The M-51 fishtail usually arrives as a reproduction; Knickerbocker rebuilds it out of parts from three countries. The dry-wax shell is organic cotton and recycled nylon woven by Olmetex in Italy, the club collar is cotton corduroy woven in the UK with a snap throat latch, and the Japanese ripstop liner unzips out and takes its own hood with it. Made in Portugal, $650.