Personalized 3rd Birthday Construction Truck Boys Toddler T-Shirt. Cute 3 year old birthday design has elephant driving a construction crane with number 3 and Im three quote 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.