Personalized Ninja Master Youth T-Shirt. Youth T-Shirt - Vintage Hot Pink with cute Ninja face with red head scarf says MASTER NINJA. Perfect for little warriors. Matching NINJA IN TRAINING design also available. 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.