RIO’s new flagship saltwater fly line has been designed for anglers hitting tropical flats in search of bonefish, permit and tarpon. The line is built on RIO’s new DirectCore, a proprietary low-memory, low-stretch monofilament core that retains its stiffness in tropical heat, yet lies straight on the water without curl or retraction. The core, which has 30% less stretch than regular tropical saltwater fly lines, ensures solid strip sets and shortened fight times. The new core isn’t the only technological advancement in this fly line. RIO’s SureFire technology, which has been used in their freshwater fly lines in the past, is added to the DirectCore Flats Pro line. This triple color, distance-marking design takes the guesswork out of accuracy and distance control, allowing anglers to make higher percentage shots to cruising targets. The DirectCore Flats Pro StealthTip line features a full-floating head with six feet of clear intermediate at the tip. This nearly invisible front section allows for shorter leaders and easier, more accurate casts, while the increased density provides greater wind penetration.