Personalized Merry Christmas Toddler Long Sleeve T-Shirt. Merry Christmas! Stylish black and white script add a touch of elegance to the holiday season. 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.