Personalized Irish At Heart Toddler T-Shirt. St. Patrick's Day Toddler T-Shirt - Heather and Royal with a heart shaped shamrock says IRISH AT HEART. You can be Irish too, even if it's only for the day. Perfect for family celebrations, St. Patrick's Day parades or any time. 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.