Using these balloons is super easy. You can inflate them with either air or helium. If you want them to float, use helium. Just blow them up and they'll be ready to decorate your party. Remember, these balloons are shipped flat, so you'll need to inflate them before use. When using helium, keep in mind that the floating time is about 12 - 18 hours. This listing only includes the balloons, so don't expect other decorations. For maintenance, once the party is over, deflate the balloons carefully and store them in a cool, dry place. They're made of biodegradable latex, so they're good for the environment, but treat them gently to keep them in good condition.