Red White Blue With Gray Lettering US Polo Assn Youth SS Tshirt Size M (10-12) The US Polo Assn. Youth SS T-shirt in size M (10-12) features a patriotic design in red, white, and blue with gray lettering. Made from a comfortable blend of polyester and cotton, this regular fit pullover shirt has a classic round neckline and short sleeves. Perfect for young boys who love to show their patriotic spirit, this T-shirt is a stylish and comfortable addition to any wardrobe.