Bought these for my husband who has been having some knee issues.  Thought support would help.  He tried them for several days and finally gave up on them.  He said they were a firm fit in his shoe and held his arch and foot too firmly. There was no give at all.  He found that after a few hours his knees hurt worse.  He tried them on and off for a week and finally took them out completely. He didn't want to give up on them easily when I told him how much they cost.  He said the arch support in his Merrill shoes worked better without them. I think I might try something with a gel support after this experience.  I bought these after reading the reviews and trying to decide whether to buy Dr. Schol's or something else.  I wasted a lot of money on these.