Designed for ultimate stealth and toughness, premium P-Line A(R) 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.