{TAIL ~ A portion} of the first and second layers can function as {HEAD ~ a frangible seal} that is configured to be torn away by a user 
{ TAIL ~ A portion } of the first and second layers can function as { HEAD ~ a frangible seal } that is configured to be torn away by a user
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH