Ka whakamahia te whitiki polyester hei ārai tahae, hei āwhina hoki i te pupuri i ngā taonga ki runga i ngā papa kia pumau ai mō te kawe, ā, ka āwhina i te whakaiti i te nekehanga me te pakaru. He tino pai te whitiki polyester (PET) mō ngā taonga taumaha. He pai ake ngā āhuatanga miihini i ngā whitiki maitai, ā, he iti ake te pakaru o te putea me te papa, nō reira he pai ake te mahi kawe.
He nui ake te ngāwari o te whitiki polyester, nō reira kāore e totoro pērā i te polypropylene, kia pūmau ake ai, kia pumau ake ai hoki te pupuri kawenga mō ngā papa i te wā e kawe ana.
E wātea ana me te pūwāhi pakaru tae atu ki te 401kg, he tino ngāwari me te roa, mō te whakamahi i roto i ngā taiao whare putunga me te tākai katoa. Ka taea te whakamahi i te whitiki polyester i roto i ngā pūnaha whitiki ā-ringa, ā-haurua-aunoa me te aunoa, ā, ka hiritia mā te whakamahi i ngā poroporo raka-ake me ngā hiri haumaru. Mō te whakamahinga ā-ringa, ko te whānui o te whitiki he 12-16mm te nuinga, mai i te pīrori kirihou, i te rīra rānei, ā, mō te whakamahinga mīhini he 5-9mm te whānui me te matua kāri.
