New from Fillauer, the Formula foot is engineered to provide an ideal balance of flexibility and power that is appropriate for a wide range of users due to a posterior mount design. The long, lightweight carbon pylon provides critical energy return through the posterior attachment, while the compact ankle joint allows for better cosmetic finishing without hindering foot performance while worn with a shoe. A full split toe feature offers maximum multiaxial function. A rocker toe supports easy and smooth roll-over. The ability to select the pylon and heel spring sizes separately facilitates a range of fitting options.