The Scientific Anglers Fly Line Backing 100YD – 20 LBS – White is a durable, high-performance backing line designed to provide extra line capacity and dependable security during long, powerful runs from hard-fighting fish. Made from tough Dacron material, it offers a thin diameter for increased reel capacity while maintaining high abrasion resistance and smooth performance.

Its low coefficient of friction helps ensure smooth line movement, while the clean white color offers a classic, easy-to-see look on the reel. A dependable choice for fly anglers targeting strong, fast-running species.

Features:

• 100-yard spool of fly line backing
• 20 lb test strength
• Durable Dacron construction
• Thin diameter for increased reel capacity
• High abrasion resistance for dependable performance
• Low coefficient of friction for smooth line movement
• Colorfast finish for long-lasting color retention
• Ideal for powerful fish and long runs
• Color: White