My daughter first purchased a set a few months ago, and her knee pain and foot pain are now non existent. So I decided to try them. I walked out of the store feeling amazing. My knee pain was minimized about 90% when I walked out of the store and foot pain 100% gone. Since then, I can get up n not have to let my knees adjust before taking a step. My knee pain always felt like I was being stabbed with a knife when I stood up. Now I can stand up immediately without knees hurting. Also my lower back pain hasn't come back. I find myself walking longer than I could before Good Feet. Overall, I feel so much better, more energy and walking longer. I took my maintainer back because it was cutting into my arch a week later n Serena, who originally helped me, was able to find one that fits perfect. I have had mine a week, n I'm so happy that after years of suffering with severe foot pain, knee pain, leg pain, n lower back pain I feel good. now I can walk continuously instead of walking, sitting, walking sitting, on n on, then ending my outing sooner than I wanted. Now I can run errands all day n I am good. Now I can step up on a curb w/ very little knee pain, but it's only been 1 week, so I expect it to feel much better as time goes on. Also, I walked all day today n no leg pain. Good Feet was worth ever dime I paid - excellent investment! My whole body feels better. Go see Serena, she is fabulous! Thanks, Good Feet!!!