Personalized Geochemist Gifts For Kids Infant Romper. My Mommy is the Worlds Best Geochemist Infant Romper - White has a worlds best occupation logo for the son or daughter whose Mom is an Geochemist. Fun Geochemist baby shower gift idea. Meet your new favorite outfit! Keep dressing simple with this one piece, lap shoulder t-romper. Super soft and perfect for baby's sensitive skin. 5.5 oz. 100% combed ringspun cotton premium jersey (CVC Colors are 60/40; Heather is 90/10 combed ringspun cotton/polyester)