Designed for ultimate stealth and toughness, premium P-Line ® CFX Fluorocarbon Leader material is made of 100% fluorocarbon and has a refractive index that's almost identical to that of water. The result is, it's virtually invisible to fish. Along with eluding the eyes of your targeted species, this leader is highly abrasion-resistant, has a low stretch factor, and is reinforced with UV protectors for extra durability. Tie a section between your line and bait, and you'll notice a higher percentage of hook-ups and fish landed. 100% fluorocarbon construction Ultimate stealth and toughness Virtually invisible underwater High abrasion resistance Very low stretch UV protectors for extended performance.