Our Blue Gender Reveal Baseballs come with one baseball filled with vibrant non-toxic blue 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 blue 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 you use a metal or wooden bat for the surprise home run at your gender reveal party. We can ship orders out the same day if placed before 2pm CST. Share photos and videos of your colored powder baseball gender reveal with us, on our social media pages.