The Mares Journey Octo is ideal for diving in moderate water temperatures and provides solid, durable performance for easy breathing in a pinch. This octo is built from ultralight technopolymer to be abrasion resistant. The Vortex Assisted Design (VAD) creates a swirling vortex of air with a low-pressure center. This keeps the diaphragm down during inhalation for sensitive, easy breathing at all depths. The 40 inch (100cm) hose is yellow for high visibility. Move and swim freely thanks to the Superflex material that is malleable, lightweight and soft. VAD (Vortex Assisted Design) bypass system for effortless, natural breathing Ultra-light technopolymer is abrasion resistant Superflex hose is bright yellow for high visibility Standard downstream demand valve Nitrox compatible to 40% 40" (100cm) length hose Exclusive to Divers Direct