I have worked for the last 4 years; and unbeknownst to me there is a special way of squatting flat feet and I didn't know it and as a result I injured my right leg. When I wear these shoes, I can squat without pain. This shoe made the difference between no squat and squat. I don't know what's magic about these sneakers but they work and are worth the $75 paid. Flat feet: GET THESE SHOES! Don't hurt yourself like me. Also, learn how to squat on the flat foot. Stay safe and stay healthy. :)