RIO Fly Line Backing - Single Use - 20 lb - Orange

Rio Fly Line Backing, Dacron, 20 lb Test, White - 100 to 5000 Yds (100 yds) : Sports & Outdoors

Backing - Dacron or Gel Spun ▻ buy at Rudi Heger

Scientific Anglers Specialty Coloured Dacron Fly Line Backing - Rasta - Hook, Line and Sinker - Guelph's #1 Tackle Store Scientific Anglers Specialty Coloured Dacron Fly Line Backing - Rasta

Fly Lines — Big Y Fly Co

Rio 100yds 20lb Fly Line Backing (10 Color Options)

Rio Dacron Fly Line Backing, 20 lb Test, Orange - 100, 200, 250, 300, 400, 600 up 2400 yds (100 yds) : Sports & Outdoors

Backing - Dacron or Gel Spun ▻ buy at Rudi Heger

RIO Fly Line Backing - Braided Dacron - Hook, Line and Sinker - Guelph's #1 Tackle Store RIO Fly Line Backing - Braided Dacron

Rio Dacron Fly-Line Backing

RIO Products Dacron Braided Backing, Fly Fishing Line, Smoothing Braid, 100 Yards, 20Lb, Orange, Fishing Line - Canada

RIO’s traditional Dacron braided backing features high strength and low stretch and is unsurpassed in quality. A good compromise between thinness and the ability to make blind It’s easier to knot than other brands that are very thin but have too tight a weave for a blind splice loop.

RIO 20lb Dacron Backing, Factory Spooled Puck 100yds / Black

Orvis Dacron Backing

Fly Line Backing Shootout and Buyer's Guide - Trident Fly Fishing

Rio fly line backing (100 & 300yds) - Salmon Fishing Flies from Helmsdale Company

In Alaska you actually need this stuff! Use 20 lb backing for for 8 weight lines and smaller., A typical 5 or 6 weight reel will need about 100 yards

Rio 20 lb Dacron Backing