Personalized 3 Year Old Birthday Policeman Car Toddler T-Shirt. Cute 3 year old birthday Toddler T-Shirt - Indigo with colorful police car and I'm three 3rd birthday slogan for a future police officer. 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.