Personalized Bubbly Chemical Engineers Newborn Layette. Chemical engineers are bubbly with bubbly text and a bubbling beaker is a humorous chemistry design. Fun engineering gifts for 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