Amnesia Leader Material is excellent material for use in the butt of your leader. 25lb test is my favorite shooting line to use on a fast sinking fly line. This can also be used as a built in indicator for nymph fishing. The 25lb and 20lb are excellent butt material for leaders as we use these in our Murray's Bright Butt Leaders. Its unique memory-free design ensures reduced tangles and allows for easy handling, making it perfect for constructing leaders for various fishing scenarios. 200ft.