Our Gender Reveal Baseball comes with one baseball filled with vibrant non-toxic blue or pink colored powder. When the ball is hit for a home run or the pitcher throws a fastball against a wall, it creates a cloud of colored powder smoke. These balls have been hit by children as young as 3. They will bounce and not bust if missed on grass, but they will break when missed over concrete. We suggest using a metal or wooden bat for your surprise home run. We promise that when you look at pictures from the gender reveal party, the powder will present one of a kind pictures revealing the gender of your baby.