Personalized Work With Nuts Beam Newborn Layette. Structural engineers work with nuts with and bolts on a steel beam is a funny design for engineers at birthdays, holidays and graduation. 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