Without O2 Inlet * Masks Include A One-way Valve * Prevents Mouth-to-mouth Contact With Victim's Face * Facilitates A Patient Airway * Combines Moderate Head Tilt / Jaw Lift And Opening Of The Mouth * More Effective Ventilation Through Mouth And Nose Simultaneously Leakproof Seal * * (model 8040a): Includes An Oxygen Inlet Valve *
