The last pair I bought my Dad wore out after over 2 years of daily use - he doesn't walk but has a very high instep on 1 foot and the seam finally gave out on 1 side of the slipper.  It was great though that I was able to order these online, as getting him to a department store would have been an ordeal for all concerned.  These are very good quality, cushioned, and completely adjustible.  They are comfortable for him when even most slippers hurt his feet.  They don't cause pressure spots.  These slippers are a bit pricey but worth every penny.