Cut through the waves this Halloween as you swim in this Mermaid Fin Accessory Kit. The 2-piece mermaid-themed accessory kit includes a headband and pair of arm warmers. Made of 94% polyester and 6% spandex, the beige arm warmers are decorated with iridescent tulle fins that shimmer in the light. The kit headband features the same iridescent fins. Add the finishing details to your mermaid costume this Halloween with this fin accessory kit.