I saw some reviewers complain about how these slippers wear down after a short period of time.  I'm not disputing their experiences, but for me, after a few weeks they are still going strong.  However, I only wear mine at night, when it is cold, so they don't get heavy use.  I guess if you are planning on buying a pair of slippers that you are going to be using a lot, I would check all of your options, read the reviews, and then make an appropriate selection.  Although I have had no issues with these slippers, I can see how people can, if they are using them very frequently.

Also, I agree with some reviewers that the slippers are tight.  This is why I dropped a star.  I am no slipper connoisseur, but I like a slipper that I can slip on and off with just my feet.  These require, or at least they did when I first got them, you to use your hands to get the heel of your foot to slip in.

Other than that, I think these are pretty good.  I'm pretty happy with my purchase.