The main body portion of {HEAD ~ the strap} is disposed between {TAIL ~ the two end portions} and includes an elongateable linearly extending elastic main body portion 
The main body portion of { HEAD ~ the strap } is disposed between { TAIL ~ the two end portions } and includes an elongateable linearly extending elastic main body portion
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH