As narrow as a G-string but without the band around the waist, leaving just a C shaped piece between the legs held in place firmly by a flexible internal frame.Since there is no material around the waist, the c-string completely eliminates the panty lines which thongs and other underwear create. C-strings are also designed for use as beachwear, which reduces the tan lines that would have been left by the side straps of even a G-string