Fly line backing- 30lb optic green

Aventik Dacron Braided Fly Line Backing for Fly

Backing Scientific Anglers Optic Green 5000yd 30lb

SF Braided Fly Fishing Backing Line for Trout Fly Line 20LB 30LB

RIO】FLY LINE BACKING DACRON - 100yd

RIO 20lb Backing - 200yd Dacron (10 Color Options)

RIO Multi Color Gel Spun Backing

Features, Myriad of colors to choose from, Good compromise between thinness and the ability to make blind splice loops, Easier to knot than brands

RIO Dacron Fly Line Backing

Rio Dacron Braided Fly Line Backing – A Blaze In The Northern Fly

Scientific Anglers Backing - Bulk 30 Lb.

SA DACRON FLY BACKING(101) - FRED'S CUSTOM TACKLE

RIO Backing Dacron

Bläkkäri Backing – Vision Fly Fishing

Bläkkäri Backing – Vision Fly Fishing

Rio Dacron Braided Fly Line Backing – A Blaze In The Northern Fly