The KeyKeg® ball is spherical to withstand maximum internal pressure with minimized deformation. The used material is PET.

The one-way keg is severly tested for all circumstances. The KeyKeg 30 beer container is especially tested in tropical conditions.

The standard colour of the ball is transparent, other colours are available on request. Even without secondary packaging the ball is able to withstand harsh treatment. The filled one-way PET container survives a drop test on a concrete floor from up to 2 meters.