These 12 - inch shiny pearl red latex balloons come in a pack of 25. You can fill them with air, water, or helium depending on your needs. For filling with air, just blow into the balloon opening. If using helium, you'll need a helium tank. When filling with water, hold the balloon under a tap. Remember, children under 8 can choke on uninflated or broken balloons, so keep them away from kids and always have an adult around. After use, deflate the balloons carefully. If you want to reuse them, store them in a cool, dry place to keep them in good condition.