![](https://www.beerandbrewer.com/wp-content/uploads/2012/11/KeyKeg_cylindrical_2012_11.jpg)
The multi-layer inner bag contains the beer, wine or soft drink and protects it from contact with propellant gas during dispensing.
The multi-layer inner bag contains the beer, wine or soft drink and protects it from contact with propellant gas during dispensing.