Personalized 2nd Birthday Monkey Toddler Long Sleeve T-Shirt. Happy monkey holds a bright balloon with a 2 on it. B-day gift t-shirt for any two year old's birthday! 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.