Not so good.
These are really pretty comfortable actually. They feel like they form to my foot, and support my arch. There are a few downsides though. They get EXTREMELY hot if you wear them out in the scorching sun. My feet felt like they were in an oven, much like they felt when you have to 'cook' them and put them on to form your foot bed. Also, I am in a rocky area, and just normal walking around has already taken small chunks off, especially around the toe area. I probably will not order these again.