Personalized Monster Truck Little Bro Youth T-Shirt. Youth T-Shirt - White with cute red kawaii monster truck with big wheels design says LIL BRO. Gift for a little brother who loves racing and big trucks. 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.