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