Personalized Lucky Puppy 3rd Birthday T-Shirt. St. Patrick's Day 3rd birthday T-Shirt - White with cute leprechaun puppy sitting on a lucky horseshoe, shamrocks and argyle pattern number three. Perfect for a wee Irish lad or lass. Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.