Michael Kors black ankle boots

MK black ankle boots with gold details and filled sole. Various materials - velvet and leather inserts, sole made of rubber-like material. Very comfortable and stable. Defect - in the last picture, you can see that material has come off the inner side of the boot. This defect cannot be seen from the outside. It is definitely not from wear, as the picture shows that the sole is not worn. I assume it is from standing in the cold.