Positively the best line cleaner, conditioner, and UV block for fly lines. By cleaning, adding a slickness, filling in imperfections and protecting lines from the sun, Line Speed allows lines to cast farther and last longer. Unlike most line cleaners, Line Speed doesn't leave a sticky, dirt gathering silicone fluid coating. Apply with Loon's Line Cleaning Tool and let sit overnight. Features The best fly line cleaner available Fills in line imperfections Coats line with UV blocker Contains advanced lubricants for better casting Increases line floatation Directions for use Apply desired amount to Line Cleaning Tool. Use Line Cleaning tool to apply to entire fly line. Let fly line sit overnight. Buff line with cloth to remove excess Line Speed.