The KeyKeg® ball is spherical to withstand maximum internal pressure with minimized deformation. The used material is PET. The PET wine keg is severly tested for all circumstances. The KeyKeg 30 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 wine PET container resists a drop test on a concrete floor from up to 2 meters.