Personalized Dump Truck 3rd Birthday Toddler T-Shirt. Toddler T-Shirt - Heather and Royal with big number three and yellow and orange dump truck with dirt graphic. This Is How I Roll. 3rd birthday gift for boys and girls who love construction and dump trucks. 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.