Personalized Work With Nuts Beam Toddler Full Zip Hooded Jacket. Structural engineers work with nuts with and bolts on a steel beam is a funny design for engineers at 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.