The ABS Octopus combines good breathing performance with the benefits of a low-profile body style. Unique 120 Degree angle between hose and mouthpiece: This Aqualung innovation is ideal for giving your octopus to a buddy - will work in either right hand or left-hand positions. No more sharp bends in the hose or upside-down octopuses in the mouth. 39" (99cm) yellow hose easily distinguishes your ABS hose from your primary hose. This high visibility hose is easily spotted in case of an out-of-air emergency. Exceeds CE breathing requirements for regulators. Versatile design allows proper function when right side up or upside down. Custom quick-release mounting clip keeps the ABS properly located on the body at-all-times. Reliable downstream demand valve mechanism, and is compatible with up to 40% O2 right out of the box. Has silicone mouthpiece with ergonomic bite wings. Octopus comes with a user guide.