Help kids "hear His call" with these fun wrist whistles. Great as Railroad VBS giveaways and prizes or to hand out at Sunday School, the assorted colors can be used to break kids into groups. Also great for VBS or youth group leaders, the whistles can be used to catch the attention of kids. The bracelet design makes these whistles easy to keep track of. Plastic. 5.08cm whistle, 5.72cm circ. unstretched coil bracelet with a 2.54cm metal key ring.