Our award-winning* Advance® Fluorocarbon promises the ultimate in handing, performance and clarity that you can expect from a modern castable fluoro fishing line. At Sufix®, our engineers have developed a new technology that allows us to bind the extruded materials together better than ever before, in a process that we call GPT™, or Gel Phase Technology™. The process itself is as sacred as Willy Wonka’s own recipe, but what it will bring to anglers such as yourself is improved transparency, unrivaled strength and abrasion resistance, increased sensitivity, and supreme handling on the reel and through guides.