Scubapro Litehawk BC w/ Air II Alternate Air Source Octo Back flotation technology positions air bladder in the back, providing exceptional freedom of movement around chest and shoulders Quick-release integrated weight system, Patented harness constuction 3-dump deflation system enables divers to dump air from a variety of underwater positions Streamlined air cell technology, and automatic volume control of air cell through compression straps Rotating Quick Release shoulder buckles and adjustable shoulder straps improve fit