Using these balloons is a breeze! You can fill them with helium, air, or water according to your needs. If you want them to float, use helium. Just make sure to inflate them close to the start of your event, as they'll only float for about 10 - 12 hours. If you don't need them to float, filling with air is a great option, and they'll last 5 - 7 days. For filling with water, just be careful not to overfill. When it comes to storage, keep them in a cool, dry place away from sharp objects to avoid popping. If you notice any small holes, it's best to replace the balloon. Enjoy decorating with these lovely balloons at your special events!