✦ Polycarbonate material ✦ 100% transparent ✦ Adjustable headrest ✦ Comfortable cushion ✦ Quick-release headgearCruzine BiPap Full Face Mask can help push air into your lungs. You wear a mask or nasal plugs that are connected to the ventilator. The machine supplies pressurized air into your airways. It is called “positive pressure ventilation” because the device helps open your lungs with this air pressure.