Personalized Future Dirt Biker Long Sleeve T-Shirt. childs dirt biking handprint quote says when I grow up Im gonna be a dirt biker Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL