Personalized American Baseball Breakthrough T-Shirt. A baseball covered in the stars and stripes of the American flag breaks through the front of the shirt. Great for anyone who loves baseball and the USA! Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.