32? Bull Dozer Construction Vehicle Design Air or Mylar Inflatable Foil Balloon

These balloons are manufactured using foil and polyester materials. Balloons made out of these types of material aren't porous, they're airtight-meaning gas isn't able to escape through the material itself. Helium might be able to escape through the neck seal, but if it's sealed tightly enough, this tends not to be a problem.

MATERIALS: This item is only made of the best and highest quality materials available to the manufacturer. WARRANTY: These products have a lifetime warranty that is guaranteed by the manufacturer. This means that if the products come with a manufacturer defect upon opening the package you may request replacement from the manufacturer.