Personalized 4th Birthday Lion 4 Year Old Safari Toddler Long Sleeve T-Shirt. Cute safari hat with lion and number 4 for kids turning four years old. 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.