I ordered the first pair under one of the lightning deal offers just to try them.  I need a slip-in (clog) type slipper that is comfortable enough to wear all day since many days my feet and ankles swell so badly that a normal house slipper is both hard to get on or becomes uncomfortable due to the swelling.  I was also looking for a slipper that didn't cause my feet to sweat.  As a personal preference, I don't like leather or any semblence thereto in a house slipper.  I have been pleasantly surprised by the overall comfort these slippers afford, the material they are made from does not cause my feet to sweat and the fact that the soles do not slip when walking on either wooden or tile flooring is a big plus for me.  I also noticed that the soles do not leave black marks on the floors like a pair of more expensive well known brand name slippers I have do.  I've machine washed (cold water with Woolite) and line dried them twice now and both times the slippers have come out looking like they are just out of the box.  Further, washing them (gentle cycle) didn't cause the "innerds" to bunch up nor have they "pilled".  It appears that these slippers are going to be a winner.  I have subsequently ordered more pairs and, given their performance to date, give them a thumbs up recommendation.