Aquila’s Sugar Ukulele Strings are made from a transparent plastic material derived from sugarcane. This material adds a light vibrato and timbre variation to the strings that fluorocarbon can’t match. They blend traits of nylon and fluorocarbon strings for a sweet, clear, and prompt sound with plenty of sustain and projection. Don’t let the name fool you, these strings are easy to grip and fret but won’t cause sticky fingers.