Iimveliso eziHollow zisebenzisa i-spinnerets ezikhethekileyo ukwenza i-tri-dimensional spiral curl-like fibre ekhethekileyo.Umngxunya wayo wangaphakathi, i-curl ye-spiral yangaphandle yefom ekhethekileyo yenza le mveliso ibe nobushushu obuphezulu, i-fluff ephezulu, i-high compression rebound iimpawu.Isetyenziswa ikakhulu ekuzalisweni kwangaphakathi komqhaphu otshiziweyo, umqhaphu ongancangathi, umqhaphu wokucoca, amathoyizi amnandi, amalaphu asekhaya, iimpahla, imiqamelo kunye namanye amasimi.