O poloka poloka polyurethane e tele mea e sili ona lelei, e aofia ai le maualuga o le malosi faʻainisinia, faʻamalo lelei, faʻalavelave faʻalavelave, faʻafefeteina, faʻafefe vevela, malulu malulu, suauʻu ma faʻamaʻi matua.Pe a faʻatusatusa i le paʻu-type, spring-type ma hydraulic-type buffers o loʻo faʻaaogaina nei i totonu o lo tatou atunuu, polyurethane buffers e le gata e sili atu le maualuga o le faʻaogaina o le paʻu, ae e iai foʻi laʻititi laʻititi, fausaga faigofie, taugofie, ma faigofie faʻapipiʻi ma tausiga.