Made of soft & light cotton fabric with spandex fabric combination. Strechy cotton to support larger chestline and suggest to be a slim fit to show your muscular body perfectly. Long sleeve with pullover hoodies or slim fit T shirts available. Extra comfortable with tagless label in neck.Can be active sports or bodybuilding, or casual wear when outside or at home . Size S : Chest-（34"-37"); Size M : Chest-（37"-38"); Size L : Chest-（39"-40"); Size XL : Chest-（40"-41"); Size 2XL : Chest-（42"-44");