A low port gives space for the tongue.
Will not collapse on the bars.
Has no real palate pressure.
The lack of shank on a kimblewick gives far less leverage.
This design offers a variety of pressure points. The port of the Cambridge design pushes against the roof of the horses mouth if needed.
This design also allows the tongue to move.
The D-shaped rings can function as lever arms if the reins are placed at the bottom.
There is a hoop above the ring which accommodates a curb chain, applying pressure to the chin and amplifying movements in the mouth.
Complete with Bradoon.