Men’s tank top Men’s muscle shirt made from cotton Machine wash Imported Black Hearts Brigade style MBTT-701 A cool ombre effect in fluid blue hues gives this men's tank from Black Hearts Brigade a distinctively denim-like look. Made from pure cotton, the Black Hearts Brigade Sigmund men's tank top offers a comfort fit and fashionable look, whether you're wearing it on its own or layered with other pieces. The tank also features a functional zip detail at the neck.