Personalized Earth Day International T-Shirt. Everyone needs to care for the Earth. Children of all dress and culture encircle the planet on Earth Day International T-Shirt - White. What a beautiful and unique way to express love for the world for all it has to offer: resources and diversity. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.