By using ConnectCore in their Perception WF Fly Line, RIO has done something truly innovative. The nonstretch core increases sensitivity, meaning better cast timing, easier line lift and more precise mends. Also, the lack of stretch causes better detection of subtle strikes and faster reaction time when setting the hook. Line is coated with MaxCast hydrophobic coating that pushes water and dirt away so it stays cleaner, floats higher and picks up off the water more quietly. AgentX formula makes the line shoot through your rods eyes with less friction, creating higher line speeds and further casting distances. SureFire tri-color system improves accuracy by showing how much line you have out. MaxFloat tip technology ensures the line floats high for excellent line control. Welded loops on front and back of line for easy attachment to backing and leader. EasyID system for quick line recognition. Colors: Camo, Green. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Fly Line.