{HEAD ~ An adhesively backed strip} of {TAIL ~ foam} or sponge rubber is adapted to be removably secured within the upper peripheral edge of a conventional oxygen mask used to deliver oxygen to a patient 
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{ HEAD ~ An adhesively backed strip } of { TAIL ~ foam } or sponge rubber is adapted to be removably secured within the upper peripheral edge of a conventional oxygen mask used to deliver oxygen to a patient
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH