Personalized Firefighter Great Pop Hero Youth Long Sleeve T-Shirt. Firefighting gift idea for Grandpa or Dad says Double Hero firefighter but more importantly a great Pop on this Fathers Day Youth Long Sleeve T-Shirt - Heather for a grandfather youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)