Personalized Unicorn Earth Day Toddler Long Sleeve T-Shirt. Earth Day Toddler Long Sleeve Tee - White to support our planet Earth Day gifts with cute unicorn wearing a floral wreath and pretty eyelashes graphic says Earth Day. For conservationists, green and earth lovers. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.