Personalized 1st Birthday Snowman Toddler Long Sleeve T-Shirt. A cute snowman holds up a frosty number 1 for the winter baby's first 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.