Personalized Hydraulic Zombie Fighter Newborn Layette. Hydraulic Engineer I fight zombies in my spare time is a humorous gift design for engineering zombie terminators. What would this world be like without them? 100% combed ringspun cotton 5.8 ounce 1×1 baby rib sleeper. 3/8" flatlock binding at envelope neck and cuffs. Back sleeve flap to protect hands. Elastic opening at bottom. Infant: 0-3 Months