The flax cone is made in France exclusively by Focal since 2013. With their original design, the cone is entirely oriented towards acoustic performance. They are made of high-quality flax fiber enclosed by two thin layers of glass fiber. F cone is characterized by their natural sound, with low coloration, their richness of reproduction in the midrange register and their tighter bass. The lightness of the fiber satisfies the criteria of high internal damping, high velocity, and high flexural rigidity. Flax is twice as light as fiberglass because the fiber is hollow. It also has very low elasticity which makes it ideal to increase the flexural rigidity of a sandwich structure.