D'Addario EFW74 Flatwound Mandolin strings are constructed using a complex combination of interlocking underwindings on a hex core, which builds the foundation for a delicate outer flat (ribbon) winding. This unique design allows the strings to vibrate freely, creating a true, clear sound and an ultra-smooth feel. Created for jazz, classical, and folk players, they deliver unparalleled comfort for playing closed position fingerings and along the fretboard.