Personalized Firefighter Uncle Red LineFlag Toddler Long Sleeve T-Shirt. Proud of my Uncle firefighter nephew or niece Toddler Long Sleeve Tee - Black with red line flag logo first responder design for kids 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.