Balloon - Wikipedia
https://en.wikipedia.org/wiki/Balloon
WEBA balloon is a flexible membrane that can be inflated with a gas, such as helium, hydrogen, nitrous oxide, oxygen, and air. For special tasks, balloons can be filled with smoke, liquid water, granular media (e.g. sand, flour or rice), or light sources.
DA: 69 PA: 21 MOZ Rank: 26