Good backing can spell the difference between a missed opportunity and your personal best. Rio Dacron Fly-Line Backing is a great choice for most situations thanks to its high strength-to-diameter ratio and incredibly 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. Great backing choice for most situations High strength-to-diameter ratio with low stretch A looser weave than other super braids Thin and manageable, with exceptional knotting ability Allows you to easily make blind splice loops