Oxygen Mask / O2 Mask

LUB DUB MEDICAL TECHNOLOGIES PVT.LTD 
An oxygen mask provides a method to
transfer breathing oxygen gas from a
storage tank to the lungs. Oxygen
masks may cover only the nose and
mouth (oral nasal mask) or the entire
face (full-face mask). They may be
made of plastic, silicone, or rubber. In
certain circumstances, oxygen may be
delivered via a nasal cannula instead