where Harvard students crowd into the Club 47 to hear the music of McKenzie’s spiritual heirs: Jim Kweskin and His Jug Band. On washtub, kazoo, stovepipe, scrub board and comb, Kweskin’s band ...

It's essentially a hair straightener in comb form that's supposed to straighten any type of hair easily. And because it's in the comb shape, it's supposed to kind of detangle as it's straightening.