RIO S Steelhead/Salmon Leaders are designed and built to match the needs of the steelhead and salmon fly fisher. The leaders are made of a medium stiff nylon and have a powerful taper design that easily turns over larger flies and cope with tough winds. The copolymer material is incredibly tough and highly abrasion resistant. For 2016 RIO has changed this material to a glacial green color to better blend into the water.