Inflated size: 61cm inflated with helium or air. In cold air, they may appear deflated; warm air should expand them again. Extreme heat could cause the helium to expand and burst the balloon.
Once inflated with helium, this balloon will float up to weeks and can be refilled. Foil ...Inflated size: 61cm inflated with helium or air. In cold air, they may appear deflated; warm air should expand them again.
Extreme heat could cause the helium to expand and burst the balloon. Once inflated with helium, this balloon will float up to weeks and can be refilled. Foil balloons may conduct electricity.
Do not release helium-filled foil balloons outdoors or use near overhead power lines. Use only non-metallic ribbon and attach the balloon to a weight to keep it from floating away.