Ifreyimu ibhekwa njengenye yezinto ezibaluleke kakhulu zokubamba ukushisa, amandla kanye nokuqina kwaleso sakhiwo kuncike kulokho okushiwo. Izitshalo zokugcina izitshalo ezenziwe ngama-polypropylene noma amapayipi e-PVC ziyaqhubeka zivame ukwedlula esikhathini esilandelayo, okuyinhloko ngenxa yezinamba eziningi zezinto ezibonakalayo nezindleko ezingabizi.