Attached to the envelope at the ends 14 are {HEAD ~ stretch tapes} 18 of {TAIL ~ convenient length}, e.g. six inches or so, and these terminate in non stretch tie tapes 20, as long as desired, about 14 to 18 inches 
Attached to the envelope at the ends 14 are { HEAD ~ stretch tapes } 18 of { TAIL ~ convenient length } , e.g. six inches or so , and these terminate in non stretch tie tapes 20 , as long as desired , about 14 to 18 inches
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL 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 OTH