The Under Armour Boys' Project Rock Hardest Worker Graphic T-Shirt in medium is a stylish and comfortable activewear top for boys. Made from a blend of cotton and polyester, this lightweight and breathable shirt features a crew neck and short sleeves, making it perfect for gym, training, or bodybuilding. The light heather grey color and graphic print showcase the Under Armour Project Rock style, suitable for active young boys who want to look and perform their best during workouts.