Personalized Baseball Santa Long Sleeve T-Shirt. Baseball Santa Long Sleeve T-Shirt - White. Baseball Santa Claus is knocking a holiday home run out of the park! Merry Christmas! 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