Hangaia e Bensen te rapa moni tiaki-wai-wai (thermoplastic elastomer) TPE (thermoplastic elastomer) me te rohe teitei hei aukati i te hukarere, te wai, te tote, te onepu me te paru kei poke i nga whariki motuka.Ko te rapa TPE he atete huarere, he pai te mahi i nga ahuatanga o te rangi, ahakoa i te tino makariri.