Rio's General Purpose Saltwater Fly Line is designed for anglers that fish non-tropical destinations, and for early season bonefish. This line is built with a supple braided multifilament core that ensures the line stays limp in the coolest of conditions. A hard, Agent X and XS technology saltwater coating gives the General Purpose Saltwater Fly Line from Rio the slickest of finishes. It is suitable for a multitude of saltwater species. Agent X technology for performance and durability XS (extreme slickness) technology repels dirt.