Personalized Rawr Dinosaur Birthday Toddler T-Shirt. Rawr! A cute little T-Rex dinosaur wearing a birthday hat and blowing a noisemaker is surrounded by colorful birthday balloons. Celebrate your little one's birthday in style. 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.