In one shoe, probably due to a manufacturing error, the insole at the arch area is slightly higher, resulting in discomfort and even pain while walking

It is highly ironic to say that these shoes are for orthostasis. I bought them as an emergency solution because my own shoes got soaked on my way to work.
In just TWO weeks and only using them for dog walks, the foam reached ground level.
I weigh 60 kilograms.
They probably have Alzheimer's foam instead of memory foam. The soles turned upside down like a padlock. I returned them, of course.