I hope someone has some ideas for this problem. The knee high boots I got from ebay have been stored badly, and when I got them the support behind the ankle was soft. It means when I put them on the bit of whatever it is between the inner lining and outer leather creases and makes one boot uncomfortable.
Sorry for gettin over technical there

but does anyone have any ideas how I can stop this bit from being pushed down as I put them on?
I guess a shoe horn may help, but I'm looking for something more permanent.