I wear slippers in the house all the time.  These keep my feet warm and are comfortable but that is about all I can say that is good about them.

The cloth on the insole has separated.  The glue they used to hold it down was not very good.

For some reason they used cloth on the bottom of the sole.  So it is quite frayed.  Not sure why they did this.  The rubber underneath is fine.

They also stretch out a lot.  So they don't fit snug anymore.  This all happened within two months of ownership.