Bought these for a recent trip to Italy. Used them every day for walking (7-10,000 steps per day!) and noticed a huge decrease in the amount of back pain I usually have from sciatica and 3 herniated discs and RA! Hard to believe I could walk so much without significant back pain, but using the Protalus insoles helped so much!! So glad I bought them before the trip and did the recommended break-in period. I am so happy they worked so well for me!