The Seaguar Riverge is a fluorocarbon monofilament invisible in water with a refraction degree 60% lower than any other traditional nylon monofilament. Very resistant, it maintains the breaking load unchanged even after a long period in the water. It remains unchanged under UV rays. It was created by the Japanese company Kureha Chemicals which patented fluorocarbon fishing lines 25 years ago. Available in 50 m reels.