I'm flat footed and I finally bought some custom insoles, but they are cheaper custom insoles from a company online, because well I don't have $500 right now for medical ones. What I'm worried about is, the company states they're only guaranteed for a year. They have helped a lot for walking, but I'm a bit concerned they'll wear the insoles down if I try deadlifting in them. On a side note, I haven't squatted in over a year. My feet are so damn flat, that I can not no matter how light the weight is, have proper form. I'm wondering if these insoles will help with this too.