Profoot Triad Insoles is ideal for Pronation, Foot, Knee, Back and Heel Pain and Plantar Fasciitis. You'll feel dramatic results the minute you put Triad Insoles in your shoes. The triple action, advanced design provides superior support and comfort to the three zones of your feet: the arches, heels, and balls of feet. The Triad is superb in helping to prevent foot fatigue and relieving knee and back pain. More shock absorption in the insole means less shock to the feet and joints. Triad Insoles are very light in weight and offer an exceptionally high degree of cushioning and shock absorption.