Scientific Anglers Sonar Stillwater Seamless Double-Density Fly Line

The SONAR Stillwater Seamless Density lines are a unique departure from the traditional graduated density lines of years past. With a variety of double-density sinking rates and a smooth, seamless transition between each, the SONAR Stillwater Seamless Density lines provide straightline connections to subsurface flies, meaning you're in control of the fly every second it's in the water.