RIO&';s traditional DacronA(R) braided backing is engineered for anglers who demand high strength and low stretch in their fly fishing setup. Unsurpassed in quality, this backing provides the perfect balance between a thin diameter and the structural integrity required to make secure blind splice loops. Designed for maximum reliability, this high-quality, super smooth braid is easier to knot than many thinner alternatives on the market. While some brands feature a weave that is too tight for effective splicing, RIO&';s construction ensures versatility and ease of use when rigging your reel. Whether you are battling hard-running fish or simply filling a spool, you can trust in a product that is 100% reliable under tension. Key Features: Traditional DacronA(R) braided construction for long-lasting durability. High strength and low stretch properties for better hook sets and control. Super smooth finish ensures consistent performance during long runs. Optimal weave density for easy knotting and blind splice loops. Trusted performance for both freshwater and saltwater environments.