Personalized Preschool Dinosaur Back to School Youth T-Shirt. Adorable dinosaur I love preschool Youth T-Shirt - Kelly Green for back to school or as a 1st day of pre-K gift for students 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.