Rudder Fly Line Backing is a great choice for most situations, as it offers a high strength-to-diameter ratio with very low stretch. In addition, the Dacron material is not woven quite as tightly as some other super-braid materials, which means you get the benefits of a thin, manageable line plus better knotting ability, allowing you to easily make blind splice loops. 110 yard spool.
Each color comes with 2 50 yard spools. (total of 100 yards)