RIO's traditional Dacron (TM) braided backing features high strength and low stretch and is unsurpassed in quality. It's easier to knot than brands that are very thin but have too tight a weave for a blind splice loop. 20 lb. (9.1 kg) and 30 lb. (13.6 kg) test 100 yd. (91.4 m) spools. Color: Chartreuse.