Aventik Braided Fly Fishing Backing Line Leaders Super Slim Fly Fishing Line Backing 25-30lb, 70lb,110yds/330yds

Aventik fly line dacron backing with 8-strand hollow braided high strength low stretch, most popular fly line backings in industry.
Smoothest surface minimizes wear on guides and do not damage your fly rod guides with very low coefficient of friction. Ultra thin for more reel capacity in chasing monsters. Rot proof and UV resistant all water conditions fresh and salt water. Perfect fit with all fly lines.
20lbs/25lbs ideal for trout, bass or all fresh water fly fishing, matching reel size 0-6.
30lbs/70lbs ideal for salmon, steelhead, pike or some salt water fly fishing, matching reel size 6-10.