With Sufix 100% Fluorocarbon Invisiline Leader, you can rely on its ultra-low visibility, superior strength and handling, incredible shock absorption, high-tensile, and knot strength, and abrasion resistance to help you haul in the big ones. Impervious to line-damaging ultraviolet rays.Features include: Crystal clear 100% fluorocarbon leader Virtually invisible in water Incredible shock absorption High tensile/knot strength Superior abrasion resistance Impervious to ultraviolet rays that can damage lines.