Personalized 6th Birthday Football Sports Boys Toddler T-Shirt. 6th Birthday Toddler T-Shirt - Charcoal has big football sports ball with number 6 and being six is a ball slogan for boys who love football. 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.