Seaguar produces the highest quality fishing lines in the world using 100% Fluorocarbon. Fluorocarbon is less absorbent than nylon monofilament, impervious to UV rays, high-density and nearly invisible underwater. Some of their revolutionizing products consist of; Red label, Leader Material (Big Game,Red Label, Blue Label, Fluoro Premier, Power Tapered, Knotless Tapered), AbrasX Ice, AbrasX, InvisX and Tatsu ( their newest line is Double Structured ). ALL are 100% Fluorocarbon.