This item, 12" Spiderman Inflate-A-Fun Foil Balloon, air-fill, is great for the following themes or uses: Licensed Characters, Licensed Characters, SpiderMan Balloons. You get one balloon for this price.. These 12" air-fill balloons have a self-sealing valve - no heat sealer required! To inflate, simply blow in the end of the handle. This balloon will not float when inflated with helium.