The rounded shape of the liner's mouthpiece allows to gently surround the animal's udder. It is appropriate for breeds genetics not particularly sophisticated, with long and wide teats. This mouthpiece entails longer milking cycles, compared to the average and it needs a higher levels of vacuum, when compared to other designs..

The multiple ring design allows to minimize intrusions of external particles into the shell and to avoid twistings by the liner's barrel. This also allows to easily adjust the tension of the liner, according to the shell length and according to the loss of rubber elasticity.

The groove by the tail eases the collapse of the liner's rubber walls, for a precise vacuum closing point.