The Scientific Anglers Absolute Fluorocarbon Saltwater Leader boasts a 15% higher wet knot strength compared to previous material and features incredible clarity and abrasion resistance. All materials, inks, and window are fully biodegradable to protect our streams and reduce our environmental footprint. Scientific Anglers Absolute Fluorocarbon Saltwater Leader Features: 100% Fluorocarbon for stealthy presentations Abrasion-resistant 10’ length for saltwater species