Marvel Inhumans Black Bolt Voice Girls Tanks Maximus better beware! The unstoppable power of Black Bolt's voice is displayed on the Marvel Inhumans Black Bolt Voice Heather Black Racerback Tank Top! Sonic rings reverberate from Black Bolt's mouth in an epic print on the front of this black Inhumans shirt. 50% Polyester, 25% Cotton, 25% Rayon.