ʻO PVC kahi mea plastik, nona ka inoa piha he polyvinyl chloride. ʻO kāna mau mea maikaʻi he haʻahaʻa ke kumu kūʻai, ola lōʻihi, moldability maikaʻi a me ka hana maikaʻi loa. Hiki iā ia ke kū i nā ʻino like ʻole i nā kaiapuni like ʻole. ʻAe kēia e hoʻohana nui ʻia i ke kūkulu ʻana, ka lāʻau lapaʻau, ke kaʻa, ka uwea a me ke kaula a me nā mea ʻē aʻe. No ka mea mai ka ʻaila mai ka mea maka nui, he hopena maikaʻi ʻole ia i ke kaiapuni. He kiʻekiʻe a paʻakikī ke hana hou ʻana i nā koina hana a me ka hana hou ʻana o nā mea PVC.
ʻO ka mea PU ka pōkole o ka mea polyurethane, kahi mea synthetic. Hoʻohālikelike ʻia me nā mea PVC, loaʻa nā mea pono PU i nā pono nui. ʻO ka mea mua, ʻoi aku ka palupalu a me ka ʻoluʻolu o ka mea PU. ʻOi aku ka elastic, hiki ke hoʻonui i ka hōʻoluʻolu a me ke ola lawelawe. ʻO ka lua, he kiʻekiʻe ka maʻalahi o ka mea PU, wai ʻole, ʻaila-hōʻoia a paʻa. A ʻaʻole maʻalahi ka ʻokiʻoki, ʻāhaʻi a i ʻole ke ʻano. Eia kekahi, he mea pili i ke kaiapuni a hiki ke hoʻohana hou ʻia. He hopena pale nui kēia i ke kaiapuni a me ke kaiaola. ʻOi aku ka maikaʻi o nā mea PU ma mua o nā mea PVC ma ke ʻano o ka hōʻoluʻolu, ka wai ʻole, ka lōʻihi a me ke aloha olakino olakino.