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The very best all-around flats line, and perfect for multiple destinations, species and water types

RIO Elite Flats Pro


Conquer the flats with RIO’s Flats Pro tropical saltwater line. This line has a mid length head and long back taper for smooth, effortless loops, and a weight distribution that provide perfect presentations of just about any fly you are likely to use. Each line is built on RIO’s low-memory DirectCore that is extremely easy to anneal (stretch) and lies perfectly straight on the water, yet retains the stiffness needed to cast in hot conditions. In addition the line is built with SlickCast—the slickest, most durable coating on the market.

There are four different density options available that ensures any angler fishing the flats is covered for all conditions and species. The options available are:

  • F – A full floating line
  • F/I StealthTip – A full floating line with a 6ft clear intermediate tip - essentially a floating line with a really short, clear tip for the ultimate in stealth.
  • F/I – A floating line with a 15ft clear intermediate tip – perfect for getting the fly down in deeper flats
  • I – A full intermediate sinking tropical saltwater line

The core strength of this line is as follows:
  • WF6 - WF7 = 30lb (13.6kg)
  • WF8 - WF9 = 45lb (20.4kg)
  • WF10 - WF12 = 60lb (27.2kg)

taper profile



DirectCore is RIO’s low-stretch core used in tropical lines. DirectCore stretches 30% less than other tropical cores, is exceptionally easy to pull coils out of, and lies exceptionally straight on the water.


SlickCast creates the slickest, most durable coating on the market – producing the least amount of friction ever measured on a fly line.



RIO’s triple color line marking system that makes it easy to gauge distances and load, with a quick glance.


RIO’s printed line marking system that allows anglers to quickly and easily identify each line.

Front Welded Loop

A neat, bulletproof loop welded at the front of the fly line for fast Spey-specific rigging.

Back Welded Loop

A neat, bulletproof loop welded at the end of the fly line for fast rigging to backing.

RIO Elite Flats Pro - All Models

Line ColorSink RateLine Size
Aqua/Orange/Light Sand Float WF6F
Aqua/Orange/Light Sand Float WF7F
Aqua/Orange/Light Sand Float WF8F
Aqua/Orange/Light Sand Float WF9F
Aqua/Orange/Light Sand Float WF10F
Aqua/Orange/Light Sand Float WF11F
Aqua/Orange/Light Sand Float WF12F
Gray/Light Sand/Kelp Float WF6F
Gray/Light Sand/Kelp Float WF7F
Gray/Light Sand/Kelp Float WF8F
Gray/Light Sand/Kelp Float WF9F
Gray/Light Sand/Kelp Float WF10F
Gray/Light Sand/Kelp Float WF11F
Gray/Light Sand/Kelp Float WF12F