Personalized Unicorn Balloons Toddler Long Sleeve T-Shirt. A cute unicorn with a rainbow mane floats in the air with a bunch of balloons in one hand and a heart in the other. 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.