Scubapro Air 2 integrated Octopus Single hose configuration eliminates the need for a separate alternate air source. Fixed VIVA flow vane for safe and uncomplicated use one-hand operation for instinctive and simple operation the self-flushing mechanism requires just one push on the purge to clear away all dirt. Classic downstream valve. Precision molded carbon fiber and technopolymer housing. Pre-tuned system.