Foil Balloons in a huge range of designs and styles. Foil balloons are suitable to be filled with helium. From small balloons up to 30-inch balloons. Please note that foil balloons may conduct electricity, please don't release them outdoors. We have a huge range of balloon weights suitable for use with foil balloons. To keep your balloons properly inflated, keep away from hot and cold temperatures. Not suitable for children, small parts. Choking hazard.