Duel Pink Fluorocarbon FISH CANNOT SEE 100mPink Fluorocarbon FISH CANNOT SEE 100m High molecular weight FLUOROCARBON 100% Easy to see by people but invisible to fish, increasing the catch of many species of fish! Effective especially for cautious or big fish. This product is created based on scientific evidence and extensive fishing tests. The specially formulated "Color Filtering Effect" cuts off wavelengths that fish can detect, making the product "invisible" to fish. FEATURES: Easy to see