Elite Rio Gold Fly Line The ultimate all-around trout fly line with low-stretch, ultra-slick performance. The Elite RIO Gold has a taper design that gives incredible loop stability at distance and a front taper that delivers perfect presentation of flies between sizes #2 and #22. With a long head and back taper this line is an excellent all around fly line on rivers and lakes when long casts and complete line control are required. This line is built with RIO's low-stretch ConnectCore Plus, resulting in exceptionally smooth, durable fly lines, with the added benefits of incredible levels of sensitivity when casting and fishing, and providing enhanced detection of takes, faster hook sets, and far greater control when playing a fish. In addition, this line is built with SlickCast, RIO's proprietary coating technology, creating the slickest, most durable fly lines on the market. Lab tests show that lines built with SlickCast have the least amount of friction ever measured in a fly line.