Personalized Shut Up and Ride Youth T-Shirt. Shut up and ride! A cyclist races along so fast that flames trail behind the bike. Great gift for biathletes, cyclists, or people who just love to ride a bike for fun! 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.