One shoe only?
I didn’t realize until I received it that it is only good for one shoe. Considering most women don’t have only one pair heels, it could get rather expensive to purchase multiple of these inserts. I have “tested” the inserts by just trying them without sticking it to the shoe and it seemed like it would do as it says. I’m on the fence to return for the fact that I have to pick one shoe to out these in and at $30 a pair, it’s too expensive to purchase multiple AND I would risk ruining the inside of the shoes if you try to remove it according to the directions. (Don’t make a mistake inserting them!)