Personalized Submarine 2nd Birthday Toddler T-Shirt. THINGS ARE LOOKING UP 2nd birthday Toddler T-Shirt - Purple with big number 2, colorful submarine, little deep sea explorer in the porthole and bright fish with bubbles. 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.