Personalized Hydraulic Engineer Water Drip Toddler Full Zip Hooded Jacket. Hydraulic Engineer Water Drip Toddler Full Zip Hooded Jacket - Black display Hydraulic Engineer in curved text dripping in water. Makes a unique gift design for civil engineers and engineering students! 7.5 oz., 60/40 cotton/polyester. Jersey-lined double-needle hemmed hood. Pouch pockets for all their treasures. Coverstitched shoulders and armholes. Coverstitched rib waistband and cuffs.