I have thyroid problems and have a lot of pain in my feet and legs. I found HappyFeet in a flea market I figured what the heck I got them for my wife and I. My wife loved them right away. She is a nurse who one her feet 12 plus hours a day. On the other hand I was not so shore of them. So theist just slide into your shoes. I have struggled with this so I pulled out the inner soul put the insert in the soul on the top. This gave me a wider surface for my foot and now I’m a fan.