Personalized Cinco De Mayo Holiday Lion Boys Girls Infant Romper. Cinco De Mayo Infant Romper - Black has cute little lion wearing a colorful sombrero hat for kids to celebrate at May 5 fiesta parties. 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)