These balloons are easy to use. You can fill them with air using a balloon pump, with helium at a party store, or even with water for some fun outdoor games. Remember to keep uninflated balloons away from kids under 8 to avoid choking hazards. If a balloon breaks, throw it away right away and always have an adult around when kids are playing with balloons. To keep the balloons looking shiny, store them in a cool, dry place away from direct sunlight.