Oxygen Mask Direction For Use: 1,Attach the oxygen supply tubing to oxygen source and set the oxygen to the prescribed flow. 2,Check for oxygen flow throughout the device. 3, Place the mask on the patientâ??s face with the elastic strap below the ears and around the neck. 4,Gently pull the ends of the strap until the mask is secure. 5,Mold the metal strip on the mask to fit the nose. Cautionï 1,For single use. Discard after use. 2,Do not use if package is open or damaged. 3,Do not store at extreme temperature and humidity. Store in cool and dry place. 4,Ensure that all connections are secure and air circulates freely through the tubing.