Personalized Irish Flag Leprechaun Toddler Long Sleeve T-Shirt. Funny novelty, lucky proud Irish St. Patrick's Day Toddler Long Sleeve Tee - Black with distressed leprechaun top hat, shamrock and Irish flag beard. For St. Paddy's Day or every day. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.