P-Line Fluorocarbon is extruded from the highest quality Japanese fluorocarbon crystals, ensuring the best knot and breaking strength available in a soft fluorocarbon line. As the educated angler knows, fluorocarbon has a refractive index very close to that of water, making it invisible once it enters the water. P-Line Fluorocarbon is hydrophobic absorbing very little water giving it great knot strength. The low stretch factor means increased sensitivity to feel even the lightest strikes. Virtually Invisible Abrasion Resistant Low Stretch Low Water Absorption 250 Yards 15lb Line Weight