Personalized Penguin 1st Birthday Toddler Long Sleeve T-Shirt. A cute little penguin wearing a winter hat is surrounded by birthday presents. A red balloon announces I'm 1! Cute 1st birthday gift for your little one year 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.