Forceline Energy Return System. Clinically proven to relieve lower back pain. You work hard all day and your feet take a pounding. Dr Scholl's experts know that over-exertion and foot shock can lead to lower back pain and tired, achy feet. That's why we developed Dr. Scholl's Advantage Work Insoles - a breakthrough in pain relief and comfort technology for your feet and lower back. In a large clinical study, 9 out of 10 people found the Dr. Scholl's Advantage Work Insoles to be effective throughout the day in relieving pain. How does the Dr. Scholl's Advantage Work Insole relieve your pain and fatigue? An analysis of food motion shows that with each step we put most force on a line of pressure points that runs alone the whole length of our feet. The advanced Forceline Energy Return System protects all these points providing excellent cushioning and comfort. The Forceline Return System: Absorbs shock and is clinically proven to relieve lower back pain; Recycles and returns energy to overworked feet to relieve tired, achy feet and legs. Consumer Tested, Performance Proven: Consumers who tested these insoles has a lot of positive things to say about them. In fact, over 8 out of 10 consumers surveyed said: the insoles provided all day comfort; the insoles allowed them to stay on their feet longer; the insoles allowed them to concentrate on more important things than lower back pain; they would recommend them to a friend.