Personalized 3rd Birthday Polar Bear Pirate Toddler Long Sleeve T-Shirt. celebrate turning three years old with this adorable polar bear in a pirate ship 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.