Personalized Ducky 3rd Birthday Toddler T-Shirt. Quack, quack! Cute little duck floating on a pond with balloons says I'M 3, IT'S MY BIRTHDAY Toddler T-Shirt - White and Black for a boy or girl's ducky 3rd birthday. 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.