Hana ʻia me nā mea polyurethane kiʻekiʻe, ikaika kiʻekiʻe, paʻa a paʻa.ʻO ka hoʻomaikaʻi hou ʻana i ka lepo lepo a me ka anti-kahiko, ke ola lōʻihi a me ke kūpaʻa wela kiʻekiʻe, i hana ʻia me ka polyurethane, ke kūpaʻa aahu, ka ikaika tensile, ka waimaka kūʻē, ka ikaika kiʻekiʻe a me ke kūpaʻa paʻa Paʻa kaʻa.