{HEAD ~ The two pads} are separated by a liquid barrier material so that {TAIL ~ the insulating pad} is maintained in a dry operable condition 
{ HEAD ~ The two pads } are separated by a liquid barrier material so that { TAIL ~ the insulating pad } is maintained in a dry operable condition
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH