The line 24 is {TAIL ~ a strong durable cord} while the waterproof membrane 28 is fabricated out of {HEAD ~ a thin plastic foil material} 
The line 24 is { TAIL ~ a strong durable cord } while the waterproof membrane 28 is fabricated out of { HEAD ~ a thin plastic foil material }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD