The second yarn 24 comprises {HEAD ~ a core} 34 of {TAIL ~ elastic material} such as rubber which is helically wrapped with an inner covering 36 defined by a fiber or filament such as polyester 
of
The second yarn 24 comprises { HEAD ~ a core } 34 of { TAIL ~ elastic material } such as rubber which is helically wrapped with an inner covering 36 defined by a fiber or filament such as polyester
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