The fibers to be used are selected from {HEAD ~ synthetic fibers}, semi synthetic fibers, {TAIL ~ regenerated fibers} and natural proteinaceous fibers 
The fibers to be used are selected from { HEAD ~ synthetic fibers } , semi synthetic fibers , { TAIL ~ regenerated fibers } and natural proteinaceous fibers
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH