Figure depicts the influence of a coupling agent on the tensile strength of EFB/kenaf hybrid green composites. The inclusion of a coupling agent in the composites attributed to a notable increase in their tensile characteristics compared to the composites that lack a coupling agent. As depicted in Figure , tensile strength of the composites exhibits an upward trend with the increasing quantity of coupling agent. The enhancement in adhesion among fibers and the matrix, brought about by the addition of a coupling agent, leads to the development of composites with increased strength.