Personalized 100 Days Of School Party Youth T-Shirt. 100th Day Of School Youth T-Shirt - Azalea has cute alligator design for kids or teachers celebrating a fun milestone of the school year together. 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.