Make these rockets roar with a whistle! A perfect addition to space-themed birthday party favors, these out-of-this-world whistles come in an assortment of shapes and colors. Your little space cadets will be over the moon as they use 'em to make some noise. Set them out on your birthday party tables for guests to grab and enjoy all party long. Sure, space may be pretty silent, but this set will have your party blasting with wacky whistles. Plastic. (2 dozen per unit) 2"