Change it up this Halloween with these fun noisemakers. A great alternative to candy, these bat shaped siren whistles make a great giveaway for trick-or-treaters. Also fits perfectly in party favor bags. Simple to use - just give the whistle a blow and it will emit a loud siren-like noise that will greatly amuse kids young and old. Assorted black and orange colors. Size: 2" L. Made of plastic. Ages 3+.