"Sea" that adorable little mermaid? Your little one will look swimmingly in this "Lil" Mermaid" costume. Includes shiny lameé-inlet dress and, to "fin"-ish the look? A pretty aquatic-floral headband! Mermaid costume is 100% Polyestser. Todller sizes 3T-4T and XS. Ages 2-4 years.