Throwing Big Streamers with a Triple-Density Line The Sonar series places your fly directly in front of the fish. They offer the right sinking line for you whether you're casting streamers for trout, huge flies for muskie, or stillwater fishing. With Sonar, you can go down and stay down.

Two line sizes heavy for loading quickly and delivering the biggest flies to the furthest targets; use designated line weight for your rod For use in moderate and cold climates; braided multifilament core