After less than three months half-day wearing the "slippers" are no longer recognizable as such. The so-called "footbed" has dissolved into its constituent parts. However, this was not difficult because it is a breath felt on cardboard on rubber midsole. The felt rubs, like the board, after a few weeks wearing off. However, this wear results in no loss in comfort, since this does not exist from the outset by the lack of any support and guide properties.
I want to take this opportunity to point out that our apartment does not have the dimensions of the Buckingham Palace and I have also not trained for a marathon with these shoes.