Happy 21st round foil balloon - this foil balloon is blue in colour and is 18"/ 46cm in width.
- Foil balloons are sensitive to extreme temperature changes. 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.
- 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.
- Inflate with helium, this balloon will float for 3 - 5 days and can be refilled.
Please note that Helium for Balloons, ribbons and weights can be purchased on our site separately.
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