In embodiments of this first aspect, the second section is at least twice folded over itself, and {HEAD ~ the first section} is stitched to {TAIL ~ the second section} 
is stitched to
In embodiments of this first aspect , the second section is at least twice folded over itself , and { HEAD ~ the first section } is stitched to { TAIL ~ the second section }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL