All the balloons are double sided the same picture is on the front and back.All my balloons are BRAND NEW deluxe helium quality from the manufacturer. They are not filled you can fill at your local grocery store discount store or florist 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.Just be sure to use the correct inflator. A black nozzle tip will be used for atex balloons and a gold narrow tip should be used for mylar balloons. If you use a larger latex black inflation nozzle on helium balloons you risk over inflation of the balloon and harming the self sealing properties and this may cause early deflation.