Personalized 4th Birthday Dinosaur Toddler T-Shirt. Grinning green dinosaur is celebrating his fourth birthday! Cute 4th birthday present for the four year 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.