I'lve used "Glide? for quite a few years on all my fly lines. Regardless if you are fresh water fishing or salt water fly fishing the fly line takes a beating. Glide will extend the life of your fly line and guarantee that every presentation shoots a few feet longer due to Glide's ability to cut down on resistance between the fly rod eyes and your fly line ~ You can't go wrong with "Glide." Tight Lines, ThumbBuster
Works, I got it with the cleaning box also. Did not realize how much "film" or dirt I had on my line. Line floated much better after cleaning. They say you need to clean your line, and they are right, it helps.