Hana ʻia mai ka mea palupalu (PP copolymer) ʻaneʻane hiki ʻole ke haki.ʻOiai i loko o ka hoʻoilo anu, e ikaika a maʻalahi ka mea.Loaʻa i kēia mea hānai kahi paʻa paʻa paʻa maʻalahi e laka i ka pale ʻana i ke kahe ʻana.