The RIO Grand, made with state-of-the-art fly line technology, is an all-around line with distinctive benefits for the trout fly fisher. The weight forward taper is one half size heavier to load fast action fly rods. The unique taper design features a long rear taper that roll casts easily and a front taper that will delicately present even the smallest dry fly. AgentX Technology gives the RIO Grand maximum floatation. The line remains supple in coldwater conditions and is ultra smooth for maximum casting distance. The Super Floatation Tip has a welded loop for changing leaders. Tests prove that when you land a fish, the loop slides through the rod guides more easily than the customary nail knot.