The robust, straight-ligero flavor of Cain F in Nub sizes? The guys over at the Oliva cigar Co. must have lost their minds. Or is it a stroke of genius? Nub cigars have gained a lot of popularity, and seem to be a favorite amongst cigar aficionados everywhere. Cain carries a full body sophistication, spicy and smooth, complex notes of wood, caramel, and mocha.