Give him unmatched sporty style in this boys' short-sleeve Under Amour branded logo t-shirt. The polyester fabric wicks sweat and moisture, keeping him cool, dry, and comfortable, and with an athletic style and feel, he will look and feel like a pro. . . . Polyester. Short-sleeves. Crew neckline. Bold Under Armour Branded Logo Graphic. Moisture-wicking. Boys sizes 4-7. Machine washable. Imported.