All my balloons are BRAND NEW deluxe helium quality from the manufacturer. They are not filled, you can fill at your local store, or rent a helium tank from your local party store or welding company. You can also air fill it and tape to the wall or attach balloon sticks. Please note that mylar balloons last about 1-2 weeks when inflated, latex will only last 8-12 hours (best to inflate latex right before the party),although actual float time varies.