Personalized Our 1st Christmas Twin Reindeer Toddler Long Sleeve T-Shirt. Our 1st Christmas twins Toddler Long Sleeve Tee - Kelly Green with cute dancing reindeer and snowflakes. 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.