A Mermaid with a Dark Side. Go for a gothic twist with your Mermaid costume this Halloween! This black bold wig features a side part and long spiral curls. Synthetic. Hand Wash. Grab a wig cap (not included) to help tame your natural tresses and give you a realistic look. Does not include costume. We cannot accept wigs for return unless they are in their original packaging, unopened and sealed. Top off your look in style—learn all you need to care for your wig here.