Personalized 9th Birthday Baseball 9 Year Old Boy Toddler T-Shirt. 9th Birthday Toddler T-Shirt - White and Black has baseball sports ball logo with being nine is a ball slogan quote for kids turning 9 years old. A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.