Personalized Six Years of Awesome Toddler Long Sleeve T-Shirt. Six years of awesome! Cool comic book style message for the awesome six year old's 6th 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.