Personalized Structural Engineer Beam Newborn Layette. Structural Engineer text with a steel beam. This I-Beam design makes a unique gift for your favorite engineering geek 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