Personalized Coolest Dad Ever Toddler Long Sleeve T-Shirt. Coolest Dad ever! Who's the best dad? This guy! Two thumbs up for this father. 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.