Backing

Cortland Line Co

Cortland Gel Spun Fly Line Backing - Yellow 80lb 300YDS

Hatch Outdoors

Hatch Premium Backing

4 colors available

Rio Products

Rio Fly Line Backing 100yd Spool

11 colors available

Rio Products

Rio Fly Line Backing 300yd Spool

2 colors available

Rio Products

Rio Gel Spun Backing

3 colors available

Scientific Anglers

SA XTS Gel Spun Backing

2 colors available