Personalized Hydraulic Engineer Water Droplets White Text Toddler T-Shirt. Hydraulic Engineer Water Drip Toddler T-Shirt - Indigo display Hydraulic Engineer in curved text dripping in water. Makes a unique gift design for civil engineers and engineering students! A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.