Personalized Hydraulic Engineer Water Drip Youth Long Sleeve T-Shirt. Hydraulic Engineer Water Drip Youth Long Sleeve T-Shirt - White display Hydraulic Engineer in curved text dripping in water. Makes a unique gift design for civil engineers and engineering students! youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)