Victor P9200 II TTY shoes failed after one week…

No, stupid question. :)

Normally I will notice that the shoe feels flatter at the heel on the ground than initial. You can also see this when you place a brand new shoe of the same model beside it. It’s a few mm difference. You can also spot some deep wrinkles in the sides of the sole. If you feel sometimes a bit pain at the heel or in the joints like ankles or knee which you normally don’t have it is a sign, that the cushion could be worn out. If you try to compress the heel by hand it feels just hard and not bouncy the cushion is for me gone.