They pop in your hand! Hold one ball in your hand and throw the other into the air - Catch the ball in the same hand and listen for the pop. Blaster Balls are safe, non-toxic, and non-flammable. Each set lasts for hundreds of explosions. Loudness varies with striking force and is comparable to snap pops. Each box includes two balls.
1 Quantity= 1 Set (2 balls)