Once upon a time all materials were naturally sourced. Now that natural fibers have lost a lot of their traditional market shares to synthetic fibers, they are gearing up to conquer new markets: yarns and fabrics are being tailored to the reinforced plastics industry. Flax is a promising natural fiber. It is relatively stiff and strong. And because it stands out favorably in damping, environmental impact and 3D-capabilities, it is sure to carve out a niche in the composites industry.