Typically water balloons are sold in quantity and often include a filling nozzle in the packaging.
Many of the low cost brands use small water balloons and generic nozzles which both tend to be difficult to use.
There are a multitude of types, including magnetically locking spheres and absorbent fabric balls.
[4] Water balloons thrown by hand in person-to-person fights pose little risk of injury.
There are, however, multiple accounts of injury to the eyes from water balloons launched by slingshot, which can increase the impact energy into the same range as a rifle bullet.
[6][7] Water balloons are typically filled at an indoor faucet, an outside tap, or at the end of a garden hose.
Portable and fixed station designs each have distinct pros and cons depending on the location of use, number of system users, and the quantity of filled water balloons needed.
[13] As the wet paper line breaks easily, the game is often likened to goldfish scooping in terms of difficulty.