News flash: clear fluorocarbon line is NOT invisible to fish. But when you add Sunline Maboroshi FC Leader to the business end of your main line, you are reducing its underwater visibility to an even greater degree. Maboroshi is produced using Sunline's Vivid Dying Process, which subtly incorporates 5 natural colors into the line: moss green, green, gray, natural clear, and reddish brown. The color changes every 6" inches or so, to help your line blend with underwater background features such as rocks, wood, and grass. Made in Japan of 100% fluorocarbon, tough and abrasion-resistant, Maboroshi FC Leader provides ultimate concealment when targeting wary fish. Ultimate concealment for targeting wary fish Vivid Dying Process adds color, reducing visibility 5-color phasing helps blend with underwater features Tough, abrasion-resistant 100% fluorocarbon construction