Berkley Vanish Fluorocarbon Leader - Easy-casting Berkley Vanish has become a popular 100% fluorocarbon line in the U.S. and Canada. Continuously upgrades on the Vanish formula have made ita mainstay to ensure your satisfaction. Great value, great performance! The Easy Handling 100% Fluorocarbon Leader Material Remains clear under water – 100% fluorocarbon refracts light similar to water Optimal Wet Strength – Non-absorbing fluorocarbon maintains strength and abrasion resistance under water Improved Flexibility – Traditional fluorocarbons are stiff, Vanish is designed to be more flexible