x Complete with adjustable head straps x Uncompromised visual field x The inhalation and exhalation valves enable smooth respiration x Leak Coefficient: ? 2% at 30l/min x Inhalation Resistance: ?50 Pa at 30l/min x Exhalation Resistance: ?300 Pa at 160l/min x Carbon Dioxide content of inhalation air: ?1.0% (by volume
