Thirty years later I have arthritis in my right foot as a result of a foot injury as a teenager. When I walk too much, exercise too much, or wear the wrong shoes, my right foot swells and hurts. But if I put one of these socks on either during a workout or within an hour of it, the swelling goes down immediately and the pain goes away. It's making a huge difference in my activity level and I'm so grateful. They are comfortable and go well with all my shoes.