Personalized Pirate 3rd Birthday Youth T-Shirt. Pirate 3rd birthday - Ahoy, matey! A happy pegleg pirate captain and his parrot first mate have found a treasure chest with a golden three. Cute gift for the three year old! Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.