Built for young ballers that are determined to lead their team to victory, this AND1 Boys' Win Always Muscle Top offers a great balance of style and comfort. The boys' muscle top is made from a lightweight, wrinkle-resistant polyester fabric to help keep him looking and feeling cool out on the court. Heathered fabric brings modern flair to the design of the basketball tank, while mesh panels along the sides and at the back yoke help to improve airflow.