Personalized 3rd Birthday Sailboat Toddler T-Shirt. 3rd Birthday Sailboat Toddler T-Shirt - Charcoal has colorful boat with number on its sail. This is perfect for a sailing themed party. 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.