Personalized Earth Day International Youth T-Shirt. Everyone needs to care for the Earth. Children of all dress and culture encircle the planet on Earth Day International Youth T-Shirt - Kelly Green. What a beautiful and unique way to express love for the world for all it has to offer: resources and diversity. 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.