Personalized Little Brother Fire Truck Youth T-Shirt. I'm the Little Brother! A cute fire truck wearing a firefighter's helmet proudly announces that he is the little brother on a Youth T-Shirt - White! 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.