Personalized Ballin' Through 100 Days of School Youth T-Shirt. These items are perfect for classroom celebrations, spirit days, or casual wear, allowing students to showcase their school pride in style. 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.