Uma ingubo yoboya ibiza kakhulu, i-fiber ye-vool fibers ibukeka kahle, okungukuthi, izinga lokuthamba nokugoqa lingcono kakhulu. Okubi ukuthi imicu kungenzeka ukuthi ihlangane futhi i-pucker.
Lesi yisizathu esiyinhloko esenza ama-wool sweaters pucker. Ukupilisa kungase kubangelwe ukungqubuzana ngokomzimba ekuphileni kwansuku zonke.
Isibonelo, ukuphuza amaphilisi maningi amathuba okuthi kwenzeke emaphaketheni, kuma-cuffs nasezindaweni zesifuba lapho uvolo uvame ukuhlikihlwa khona ngezinto zangaphandle noma ezigugile.
Lapho bephotha uvolo, abakhiqizi bakhulula ukusonteka kwentambo ukuze kuzwakale kuthambile, okubangela ukuthi imicu ibambene ngokukhululeka.