Personalized Environmental Engineer Gamer Toddler Full Zip Hooded Jacket. Environmental Engineer I fight zombies in my spare time is a funny gift design for engineering gamers at birthdays, holidays and graduation. What would this world be like without them? 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.