Dive right in to spooky Halloween fun with these Light-Up Skeleton Mermaid Necklaces! Perfect candy alternatives to hand out to trick-or-treaters, these necklaces will help little ones light the way as they make their way around the neighborhood in their Halloween costumes. Plastic. 2 1/4" x 3" charms on 24" circ. nylon breakaway cords. Includes batteries.