Effective multiple density Scandi head for total depth and fly control Rio's Scandinavian Series InTouch Scandi 3D is comprised of multi-density shooting heads which seamlessly integrate three different densities along the length of a single head. Scandi 3Ds cut through wind and current, and let you swing the fly deep without snagging bottom when the current slows. These lines feature ultra-low-stretch ConnectCore for enhanced sensitivity, easier mends, and faster hook sets. In short, Scandi 3Ds revolutionize how we fish rivers at depth, and change the very definition of “fly water.”