Personalized Baseball Christmas Tree Toddler Long Sleeve T-Shirt. An evergreen tree made of green baseballs is a fun gift design for baseball and softball players during the winter holidays. 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.