Piʻi nui mai ka hopohopo e pili ana i ka ʻike ʻana i ka wai ke nānā nā luna kūʻai i nā mea hoʻopaʻa no ka mālama ʻana ma waho, ka hoʻouna ʻana ma ke kai, a i ʻole nā hale waihona wai. ʻO ka pane maʻalahi ʻaʻole, ʻaʻole e hōʻeha ka wai i ke kaula polyester. No ka mea he hydrophobic kona mau mole, ʻo ke kaula PET (Polyethylene Terephthalate) he ver