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