Originally Posted by Garfield Cat

I have flat feet and when I was running cross country many years ago, I had a pair of orthotics made by the Podiatrist. Years later my bike fitter said I needed to put the orthotics in the SIDI Genius 5 shoes.

The main reason was to get the right muscles working on the down stroke. Somehow with flat feet, the muscles aren't being used to its full potential. I don't know if all this is true but I have them in the shoe. I honestly cannot tell one way or another. To me, the feet still flatten out on the down stroke.