You will receive...(1) 28"/71cm wide x 32"/81cm high Construction Bull Dozer Loader Truck Mylar Balloon. (2) 18" Happy Birthday Bull Dozer Mylar Balloons.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, although actual float time varies.