A.C.
I don't know about those specific ones but I also have flat feet and my podiatrist made a digital scan of my feet and had some custom orthotics made for me at a lab. I LOVE them!!! My feet feel SO much better. The down side was that they cost me $300. Well come to find out Costco does the exact same thing for $80! They do a digital scan and even the same LAB makes them!!! I was mad to find out I wasted that money! Oh well they make a world of difference to how my feet feel. I love them. But I would have gone to Costco had I known.