Personalized Ahoy Matey 1st Birthday Youth T-Shirt. 1st birthday Youth T-Shirt - White with a life preserver and a big number 1 says AHOY MATEY! LOOK WHO'S ONE!. Perfect for your little skipper's first birthday. 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.