Non-Rebreather Mask are devices that are constructed to supply oxygen or other gases to an individual. The Mask has an attached reservoir bag which is able to avoid rebreathing. It can provide a high concentration of oxygen.The Non-rebreath Mask is made from PVC, the transparent plastic mask also leave the face visible, allowing care providers to better ascertain patients’ conditions. Greatcare is a professional Non-rebreath Mask factory from China with high quality.