High rigidity and a high strength to weight ratio are benefits of polymeric materials reinforced with synthetic fibers like glass, carbon, and aramid over traditional building materials like steel, concrete, and wood. Despite these benefits, synthetic fiber-reinforced polymer composites are becoming less and less common due to their high starting prices, inefficient structural forms, and—most importantly—disastrous environmental effects. On the other hand, one of the key reasons to investigate the possibility of employing natural fibers as reinforcement for polymers is the growing interest in using them as reinforcement in plastics to replace traditional synthetic fibers in several structural applications. Due of this, scientists have concentrated on studying natural fiber composites, also known as bio-composites, which are made of natural or synthetic resins and reinforced with natural fibers. Because renewable raw materials are healthy and do not harm the environment, researchers from all over the globe have been pursuing the production of high-performance engineered materials from renewable resources.