ʻO ka resin polypropylene kahi waiwai ʻaʻole pōʻino. Ua pāpā loa ʻia ka hoʻolei ʻana a me ka hoʻohana ʻana i nā mea hana ʻoi e like me ka makau i ka wā o ka halihali.ʻAʻole pono e hui pū ʻia me ke one, nā metala i ʻoki ʻia, ka lanahu a me ke aniani, a i ʻole nā mea ʻawaʻawa, nā mea ʻino a i ʻole nā mea puhi ahi i ka lawe ʻana.ʻAʻole loa e ʻike i ka lā a i ʻole ka ua.