Personalized Engineer Lightening Bolt Toddler Full Zip Hooded Jacket. Don't mess with an electrical engineer text inside a lightening bolt is a funny gift design for birthdays, holidays and graduation. 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.