With the Pony Bottle Quick-Release System, the pony cylinder can be coupled to the main air cylinder quickly and easily. Half of the system is permanently attached to the pony cylinder, while the other half is secured to the backpack belt of the stabilising jacket. This half can also be secured by way of two stainless steel clips These clips have been given a protective rubber layer. By pushing in a spring-loaded locking pin with the thumb, the bottles are connected / disconnected. The bottle holder plates come with rubber strips to provide a better grip on the air cylinders. The light-weight metal has been given a seawater-proof coating.