Personalized Santa Merry Christmas Toddler Long Sleeve T-Shirt. Santa Claus pops out of a pile of colorful Christmas presents with a red and green Merry Christmas above him. Ho Ho Ho! 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.