What to expect
In optimum environments, your foil balloons will remain full and taught for three to five days. They will continue to float for longer but will gradually start to appear less taught as they start to lose helium.
Caring for your balloons
Your balloon’s favourite environment is:
- to be indoors, at normal room temperature
- away from intense heat, such as radiators
- away from direct sunlight
If your balloon is exposed to too much heat, the helium will expand, causing it to pop. When the temperature is very cold, it causes the helium to shrink, reducing the size and float time of the balloon. Foil balloons will noticeably shrink in cold weather – however, they will return to normal as soon as they are back in room temperature.