Durable – Extremely abrasion-resistant and features high strength and low stretch. (50 to 100 yards of 20-lb backing is generally reserved for panfish and trout species…), Small Diameter – 20 lb has 0.008’’ of diameter, 30 lb has 0.012’’ of diameter, which allows fishers to load long lengths of line on the reel, Dacron Backing – 8 Strand Braided Backing Line is made from rot proof Polyester, suitable for light duty saltwater and most freshwater fly fishing, Multi color for choice – Five color options make it easier to have a color that compliments you reel and line