Go after the biggest, strongest game fish with maximum-strength gel-spun fly line backing.
Fly Line Backing - Multi Color Gel Spun
Gel Spun Backing Line 130 yds 20 lbs Bagline
Alfa Gel Spun Backing Line - FrostyFly
What is Fly Line Backing and How Much Do You Need? - Guide Recommended
Gel-Spun Fly Line Backing
Micron Fly Line Backing - Chartreuse – Cortland Line Company
Orvis Soft Tungsten Weight – Orvis UK
Cortland’s Gel Spun backing is made from super-high-strength gel-spun fibers, braided to exact specifications. The tight, round braid allows you to
Cortland Gel Spun Fly Line Backing - 300 Yards
Fly Line Backing Wild Water Fly Fishing
Scientific Anglers XTS Gel Spun Backing, Installed #50
Fly Line Backing Shootout and Buyer's Guide - Trident Fly Fishing
Our new Braided Gel Spun (GSP) ultra thin backing is popular with saltwater fly anglers looking for a small diameter backing. Gives you more backing
Braided Gel Spun Ultra Thin Backing
Dacron Backing Scientific Anglers
Gel-Spun Backing - 30 LB./1000 YDS. – Orvis UK