Hāʻawi ka Polyurethane i ka māmā, ka ʻoluʻolu, a me ke kūpaʻa kiʻekiʻe no nā huahana kāmaʻa e like me nā ʻōpuʻu wāwae, nā waena, nā ʻōpuʻu wāwae, nā ʻōpuʻu wāwae palekana, a me nā kāmaʻa puki. Hiki i kā mākou mau mea hoʻoulu ke hana i nā ʻōpuʻu wāwae me ke kahe maikaʻi, ke ʻano like o nā pore, a me ka hoʻōla mau ʻana, no laila e hoʻomaikaʻi ana i ka cushioning, ka maʻalahi, a me ke kū'ē ʻana i ka abrasion o nā ʻōpuʻu wāwae.