I've bought Dearfoams years and years ago, and they used to be the best on the market.  In recent years I've bought cheap fuzzy slippers from a well-known discount store and they always lasted much longer than these.  This slipper was comfortable for about two months.  After that, they began breaking down.  The inside is torn and squished, and they look horrible.  I am so disappointed in this popular brand.  I feel I have been ripped off for sure.