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, ukupilisa kungenzeka kakhulu emaphaketheni, ezinkopheni nasezindaweni zesifuba lapho uvolo uvame ukuhlikihlwa khona ngezinto zangaphandle noma ezigugile.
Lapho bephotha uvolo, abakhiqizi bakhulula ukusonteka kwentambo ukuze kuzwakale kuthambile, okwenza imicu ibambene ngokukhululeka.