Personalized Dirt Biking Youth T-Shirt. Funny dirt biking quote says easily distracted by dirt bikes on this off-road vehicle themed Youth T-Shirt - Black for weekends 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.