ʻO ka Enhanced Performance Fiber Unit (EPFU) he liʻiliʻi liʻiliʻi, paona māmā, hoʻonui ʻia i ka ʻili o waho sheath fiber unit me ka mea hoʻohui i hoʻolālā ʻia no ka puhi ʻana i loko o nā pūpū micro tube e ka ea. Hāʻawi ka papa thermoplastic o waho i kahi kiʻekiʻe o ka pale a me nā waiwai hoʻonohonoho maikaʻi loa.