Personalized Ninja Master Youth T-Shirt. Youth T-Shirt - White 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.