Used Scubapro X - Black with Air2 V GENThe front adjustable X Black features SCUBAPROs exclusive AirFlex system (highlighted by the red bungees threaded throughout the BCD) that simplifies buoyancy control and helps guarantee an extremely stable ride at depth. Loaded with convenience and performance features, the X Black is also one of the most comfortable BCDs available, thanks to its ergonomic cut and huge lift capacity.