Compact and lightweight, the Instinct features side exhaust that deflects bubbles away from your field of vision. Compensating openings in the back minimize the likelihood of freeflows in strong current. An oversized purge button makes it easy to use even when wearing thick gloves. A lightweight and pliable hose delivers superior comfort.Ultralight Technopolymer: Abrasion resistant and affordable, ideal for diving in warm and moderate water temperaturesVortex Assisted Design (VAD) System: The air bypass tube sends air to the mouthpiesce creating a swirling vortex with a low pressure area in the center that keeps the diaphragm down during inhalation, for very asy breathing at all depths. In cold water diving, this system prevents ice crystals (which can be generated by the expansion of humid air in cold temperatures) from interfering with the proper operation of second stage components.Superflux Hose: Lightweight and soft for pliable movementFeatures:Material: TechnopolymerWeight: 335g (11oz.)Two year limited warranty