I have a pair of black high heels. I bought a half size larger because I was between sizes and I didn't think they would stretch (crocodile leather.) There is a slight space between the heel of my foot and the shoe.
Thus far, I put a gel pad on the ball of my feet for comfort, and it works as long as I stay on carpet. But outdoors on pavement? Forget it.
Is there anything I can insert in the shoe to make it a better fit for my foot?