Personalized Earth Day Footprints Long Sleeve T-Shirt. Earth day text and human footprints with an land and ocean fill is a unique design for conservationists on Earth day. 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