Personalized Fueled By Doughnuts Youth T-Shirt. A bicycle with the text fueled by doughnuts is a humorous design for bikers at birthdays and holidays. 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.