The Abyss Octopus offers maximum dependability in the most demanding water conditions. Featuring a front cover with metal insert and Mesh Grid as well as a hose protector for better heat exchange. DESCRIPTION VAD system Mesh grid All-metal technology Superflex hose Cold water use Material: Metal Technology Lightweight yoke: Yes totweightwhose: 427g TECHNOLOGIES Mesh Grid Patented design which reduces the impact of water flow onto the second stage diaphragm, thus eliminating free flows even in strong currents. All Metal Technology Outstanding mechanical reliability and high thermal conductivity make our metal 2nd stages extremely long lasting and ideal for cold water dives. The high thermal conductivity of metal reduces also the dry mouth feeling during the dive. VAD - Vortex Assisted Design The air bypass tube delivers air to the mouthpiece creating a swirling vortex with a low pressure area in the center that keeps the diaphragm down during inhalation, for very sensitive and easy breathing at all depths. Superflex Hose Extreme light weight and exceptional softness guarantee the maximum freedom of movement.