The Sorbothane Ultra Sole Insoles are a full-length, flat cushioned insole that is specially designed to protect the feet of runners and walkers seeking flexibility, extra cushioning and top-level support. Sorbothane Insoles are highly recommended by doctors and other medical specialist and are accepted by the American Podiatric Medical Association. Offering more than 40% Sorbothane for additional comfort and high energy return, impact making every step as powerful as the next.