Personalized My 1st Earth Day Environment Celebration Party Long Sleeve T-Shirt. Celebrate baby's 1st Earth Day with this cute Long Sleeve T-Shirt - White that has a plaid blue and green planet logo. Perfect for an Earth Day party activity. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL