Personalized USA Flag Baseball T-Shirt. Show your love for America and baseball with our USA Flag Baseball print design apparel. This unique clothing line combines the spirit of the sport with patriotic flair, making it perfect for fans and players alike. 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.