SA fly lines feature AST — Advanced Shooting Technology, an innovative coating that outperforms silicone and other line coatings, lubricants and dressings — in their lines. The result is easier, faster shooting line, higher floating and less wear on the line and guides from casting. Scientific Anglers™ offers Sharkskin™ lines with the ultimate fly line technology; Mastery Series premium lines incorporating SA’s advanced features; and Professional Series™ lines, a full range of general purpose and specialty fly lines with advanced formulations and tapers, at prices you can afford.