Personalized Dad Is The Worlds Best Teacher Infant Romper. My Dad is the Worlds Best Teacher Infant Romper - Natural has cute school apple logo. 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)