Personalized 5th Birthday Comic Book Toddler T-Shirt. Pow! Happy birthday to the 5 year old! 5th birthday gift for your little superhero. 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.