I have suffered from plantar fasciitis for about the last two years basically from not wearing the proper shoes and support. I would often have pain in my heel to the point of barely being able to walk. Also, I'd have pain on the top and side of my foot. Knee pain would typically follow from tendinitis. This went on for quite some time with only relieve from pain medication and rest. I saw the ad for Protalus Insoles said I'd try anything to help my foot and knee pain. I got the insoles in late February and had worn them ever since. I have yet to have any foot or knee pain after wearing these. My wife and I went to Disney World last week, and we walked about 10 miles a day at the parks, and I never had any pain from my heel or knee wearing the Align Footwear Insoles. I'm a believer in these and will purchase another couple of pair soon to keep in my work shoes and golf shoes! Thank you for helping me get rid of my plantar fasciitis and knee pain!