I have had plantar fasciitis on my left foot for over a year and am always looking for relief. I ordered these socks for the 5,000 monthly I'm trying to make. I was very happy with the good feel of these socks and the compression. My leg hurt after 5 km? Yes, I wasn't expecting a miracle, but I think I felt a lot less pain while running in these socks. I wear size 7 sneakers and have narrow feet. I will be buying a few more pairs over time but am hoping to find a package deal with a lower cost per pair as I think they are expensive.