Nike Kobe Black Mamba S/S T-Shirt - Boys' Grade School The Nike Kobe Black Mamba T-Shirt displays a screen-printed graphic caption on soft, lightweight cotton fabric for all-day comfort worthy of basketball superstar Kobe Bryant. Dri-FIT® fabric wicks away sweat to help keep you dry and comfortable. Shoulder seams are rolled forward to increase range of motion. Ribbed neckline helps the tee stay in place. 60% cotton/40% polyester. Imported.